diff --git a/common/biomesoplenty/biomes/BiomeGenAlps.java b/common/biomesoplenty/biomes/BiomeGenAlps.java
index ac3869088..44c212520 100644
--- a/common/biomesoplenty/biomes/BiomeGenAlps.java
+++ b/common/biomesoplenty/biomes/BiomeGenAlps.java
@@ -39,7 +39,8 @@ public class BiomeGenAlps extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenAlpsBase.java b/common/biomesoplenty/biomes/BiomeGenAlpsBase.java
index a3bcefdf6..07f810b6c 100644
--- a/common/biomesoplenty/biomes/BiomeGenAlpsBase.java
+++ b/common/biomesoplenty/biomes/BiomeGenAlpsBase.java
@@ -38,7 +38,8 @@ public class BiomeGenAlpsBase extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenAlpsForest.java b/common/biomesoplenty/biomes/BiomeGenAlpsForest.java
index 04e85cb75..07cc224d0 100644
--- a/common/biomesoplenty/biomes/BiomeGenAlpsForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenAlpsForest.java
@@ -40,7 +40,8 @@ public class BiomeGenAlpsForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenArctic.java b/common/biomesoplenty/biomes/BiomeGenArctic.java
index d00e05111..1291d80ae 100644
--- a/common/biomesoplenty/biomes/BiomeGenArctic.java
+++ b/common/biomesoplenty/biomes/BiomeGenArctic.java
@@ -37,7 +37,8 @@ public class BiomeGenArctic extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenBadlands.java b/common/biomesoplenty/biomes/BiomeGenBadlands.java
index be557e0a7..532e4e930 100644
--- a/common/biomesoplenty/biomes/BiomeGenBadlands.java
+++ b/common/biomesoplenty/biomes/BiomeGenBadlands.java
@@ -45,7 +45,8 @@ public class BiomeGenBadlands extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenBambooForest.java b/common/biomesoplenty/biomes/BiomeGenBambooForest.java
index ae9b46c85..8c4e175d4 100644
--- a/common/biomesoplenty/biomes/BiomeGenBambooForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenBambooForest.java
@@ -41,7 +41,8 @@ public class BiomeGenBambooForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 6, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenBirchForest.java b/common/biomesoplenty/biomes/BiomeGenBirchForest.java
index 2ae9418ff..5a0e6fdee 100644
--- a/common/biomesoplenty/biomes/BiomeGenBirchForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenBirchForest.java
@@ -57,7 +57,8 @@ public class BiomeGenBirchForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenBorealForest.java b/common/biomesoplenty/biomes/BiomeGenBorealForest.java
index 576834e41..159a70f4a 100644
--- a/common/biomesoplenty/biomes/BiomeGenBorealForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenBorealForest.java
@@ -61,7 +61,8 @@ public class BiomeGenBorealForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenCanyon.java b/common/biomesoplenty/biomes/BiomeGenCanyon.java
index 5587fd7c4..b31e9cc46 100644
--- a/common/biomesoplenty/biomes/BiomeGenCanyon.java
+++ b/common/biomesoplenty/biomes/BiomeGenCanyon.java
@@ -52,7 +52,8 @@ public class BiomeGenCanyon extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenCanyonRavine.java b/common/biomesoplenty/biomes/BiomeGenCanyonRavine.java
index f9f2800b7..a75504eb3 100644
--- a/common/biomesoplenty/biomes/BiomeGenCanyonRavine.java
+++ b/common/biomesoplenty/biomes/BiomeGenCanyonRavine.java
@@ -52,7 +52,8 @@ public class BiomeGenCanyonRavine extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenChaparral.java b/common/biomesoplenty/biomes/BiomeGenChaparral.java
index 8a3e19011..088b2c077 100644
--- a/common/biomesoplenty/biomes/BiomeGenChaparral.java
+++ b/common/biomesoplenty/biomes/BiomeGenChaparral.java
@@ -47,7 +47,8 @@ public class BiomeGenChaparral extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenCherryBlossomGrove.java b/common/biomesoplenty/biomes/BiomeGenCherryBlossomGrove.java
index 8cb4a3e5b..8eff316ec 100644
--- a/common/biomesoplenty/biomes/BiomeGenCherryBlossomGrove.java
+++ b/common/biomesoplenty/biomes/BiomeGenCherryBlossomGrove.java
@@ -50,7 +50,8 @@ public class BiomeGenCherryBlossomGrove extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenConiferousForest.java b/common/biomesoplenty/biomes/BiomeGenConiferousForest.java
index e1faf11b1..33a5efd0e 100644
--- a/common/biomesoplenty/biomes/BiomeGenConiferousForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenConiferousForest.java
@@ -73,7 +73,8 @@ public class BiomeGenConiferousForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenConiferousForestSnow.java b/common/biomesoplenty/biomes/BiomeGenConiferousForestSnow.java
index ec53829b9..6dd8780f6 100644
--- a/common/biomesoplenty/biomes/BiomeGenConiferousForestSnow.java
+++ b/common/biomesoplenty/biomes/BiomeGenConiferousForestSnow.java
@@ -41,7 +41,8 @@ public class BiomeGenConiferousForestSnow extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenCrag.java b/common/biomesoplenty/biomes/BiomeGenCrag.java
index a194db0d2..52715fcbf 100644
--- a/common/biomesoplenty/biomes/BiomeGenCrag.java
+++ b/common/biomesoplenty/biomes/BiomeGenCrag.java
@@ -39,7 +39,8 @@ public class BiomeGenCrag extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenDeadForestSnow.java b/common/biomesoplenty/biomes/BiomeGenDeadForestSnow.java
index 385ea6873..0ce27c60b 100644
--- a/common/biomesoplenty/biomes/BiomeGenDeadForestSnow.java
+++ b/common/biomesoplenty/biomes/BiomeGenDeadForestSnow.java
@@ -41,7 +41,8 @@ public class BiomeGenDeadForestSnow extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenDeadSwamp.java b/common/biomesoplenty/biomes/BiomeGenDeadSwamp.java
index 1cc576d92..e5ddd6eb1 100644
--- a/common/biomesoplenty/biomes/BiomeGenDeadSwamp.java
+++ b/common/biomesoplenty/biomes/BiomeGenDeadSwamp.java
@@ -49,7 +49,8 @@ public class BiomeGenDeadSwamp extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 10, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenDeciduousForest.java b/common/biomesoplenty/biomes/BiomeGenDeciduousForest.java
index 770315c9e..0db947f02 100644
--- a/common/biomesoplenty/biomes/BiomeGenDeciduousForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenDeciduousForest.java
@@ -61,7 +61,8 @@ public class BiomeGenDeciduousForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenDunes.java b/common/biomesoplenty/biomes/BiomeGenDunes.java
index a65910e9b..2709d8f6e 100644
--- a/common/biomesoplenty/biomes/BiomeGenDunes.java
+++ b/common/biomesoplenty/biomes/BiomeGenDunes.java
@@ -41,7 +41,8 @@ public class BiomeGenDunes extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenField.java b/common/biomesoplenty/biomes/BiomeGenField.java
index 7e83ecf13..cf24782da 100644
--- a/common/biomesoplenty/biomes/BiomeGenField.java
+++ b/common/biomesoplenty/biomes/BiomeGenField.java
@@ -41,7 +41,8 @@ public class BiomeGenField extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenFieldForest.java b/common/biomesoplenty/biomes/BiomeGenFieldForest.java
index 973923fea..df4c587de 100644
--- a/common/biomesoplenty/biomes/BiomeGenFieldForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenFieldForest.java
@@ -52,7 +52,8 @@ public class BiomeGenFieldForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenFrostForest.java b/common/biomesoplenty/biomes/BiomeGenFrostForest.java
index 422a9a311..da3e29fc2 100644
--- a/common/biomesoplenty/biomes/BiomeGenFrostForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenFrostForest.java
@@ -39,7 +39,8 @@ public class BiomeGenFrostForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenGarden.java b/common/biomesoplenty/biomes/BiomeGenGarden.java
index b497616f0..0f7f2d555 100644
--- a/common/biomesoplenty/biomes/BiomeGenGarden.java
+++ b/common/biomesoplenty/biomes/BiomeGenGarden.java
@@ -57,7 +57,8 @@ public class BiomeGenGarden extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenGlacier.java b/common/biomesoplenty/biomes/BiomeGenGlacier.java
index 0f32418f2..37870f543 100644
--- a/common/biomesoplenty/biomes/BiomeGenGlacier.java
+++ b/common/biomesoplenty/biomes/BiomeGenGlacier.java
@@ -39,7 +39,8 @@ public class BiomeGenGlacier extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenGrassland.java b/common/biomesoplenty/biomes/BiomeGenGrassland.java
index 60b502dbf..24f69ecc8 100644
--- a/common/biomesoplenty/biomes/BiomeGenGrassland.java
+++ b/common/biomesoplenty/biomes/BiomeGenGrassland.java
@@ -56,7 +56,8 @@ public class BiomeGenGrassland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenGrove.java b/common/biomesoplenty/biomes/BiomeGenGrove.java
index d51e8f2b7..cb1054762 100644
--- a/common/biomesoplenty/biomes/BiomeGenGrove.java
+++ b/common/biomesoplenty/biomes/BiomeGenGrove.java
@@ -64,7 +64,8 @@ public class BiomeGenGrove extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenHeathland.java b/common/biomesoplenty/biomes/BiomeGenHeathland.java
index 0012715f3..723bd7181 100644
--- a/common/biomesoplenty/biomes/BiomeGenHeathland.java
+++ b/common/biomesoplenty/biomes/BiomeGenHeathland.java
@@ -44,7 +44,8 @@ public class BiomeGenHeathland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenHighland.java b/common/biomesoplenty/biomes/BiomeGenHighland.java
index 575a23b7f..6f7918fb1 100644
--- a/common/biomesoplenty/biomes/BiomeGenHighland.java
+++ b/common/biomesoplenty/biomes/BiomeGenHighland.java
@@ -36,7 +36,8 @@ public class BiomeGenHighland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenHotSprings.java b/common/biomesoplenty/biomes/BiomeGenHotSprings.java
index af60c6878..e44dd0d64 100644
--- a/common/biomesoplenty/biomes/BiomeGenHotSprings.java
+++ b/common/biomesoplenty/biomes/BiomeGenHotSprings.java
@@ -41,7 +41,8 @@ public class BiomeGenHotSprings extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenIcyHills.java b/common/biomesoplenty/biomes/BiomeGenIcyHills.java
index 57c1ad6b3..1c8e40741 100644
--- a/common/biomesoplenty/biomes/BiomeGenIcyHills.java
+++ b/common/biomesoplenty/biomes/BiomeGenIcyHills.java
@@ -45,7 +45,8 @@ public class BiomeGenIcyHills extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenJadeCliffs.java b/common/biomesoplenty/biomes/BiomeGenJadeCliffs.java
index 70cc71fa3..d6cbac8fd 100644
--- a/common/biomesoplenty/biomes/BiomeGenJadeCliffs.java
+++ b/common/biomesoplenty/biomes/BiomeGenJadeCliffs.java
@@ -38,7 +38,8 @@ public class BiomeGenJadeCliffs extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenLushSwamp.java b/common/biomesoplenty/biomes/BiomeGenLushSwamp.java
index c9d6891fd..dd6f946e0 100644
--- a/common/biomesoplenty/biomes/BiomeGenLushSwamp.java
+++ b/common/biomesoplenty/biomes/BiomeGenLushSwamp.java
@@ -48,7 +48,8 @@ public class BiomeGenLushSwamp extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 10, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMangrove.java b/common/biomesoplenty/biomes/BiomeGenMangrove.java
index d96e37340..713fb6e15 100644
--- a/common/biomesoplenty/biomes/BiomeGenMangrove.java
+++ b/common/biomesoplenty/biomes/BiomeGenMangrove.java
@@ -44,7 +44,8 @@ public class BiomeGenMangrove extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMapleWoods.java b/common/biomesoplenty/biomes/BiomeGenMapleWoods.java
index c28cb6120..ef6808044 100644
--- a/common/biomesoplenty/biomes/BiomeGenMapleWoods.java
+++ b/common/biomesoplenty/biomes/BiomeGenMapleWoods.java
@@ -46,7 +46,8 @@ public class BiomeGenMapleWoods extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMeadow.java b/common/biomesoplenty/biomes/BiomeGenMeadow.java
index b44b9d6c2..e4f4cdeab 100644
--- a/common/biomesoplenty/biomes/BiomeGenMeadow.java
+++ b/common/biomesoplenty/biomes/BiomeGenMeadow.java
@@ -47,7 +47,8 @@ public class BiomeGenMeadow extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMeadowForest.java b/common/biomesoplenty/biomes/BiomeGenMeadowForest.java
index 5495506b4..ece545cb3 100644
--- a/common/biomesoplenty/biomes/BiomeGenMeadowForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenMeadowForest.java
@@ -42,7 +42,8 @@ public class BiomeGenMeadowForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMesa.java b/common/biomesoplenty/biomes/BiomeGenMesa.java
index aee00d7c3..3aab166ed 100644
--- a/common/biomesoplenty/biomes/BiomeGenMesa.java
+++ b/common/biomesoplenty/biomes/BiomeGenMesa.java
@@ -44,7 +44,8 @@ public class BiomeGenMesa extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMoor.java b/common/biomesoplenty/biomes/BiomeGenMoor.java
index 826af1750..bbf949d8d 100644
--- a/common/biomesoplenty/biomes/BiomeGenMoor.java
+++ b/common/biomesoplenty/biomes/BiomeGenMoor.java
@@ -71,7 +71,8 @@ public class BiomeGenMoor extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenMountain.java b/common/biomesoplenty/biomes/BiomeGenMountain.java
index 0fdc58737..fa8d93215 100644
--- a/common/biomesoplenty/biomes/BiomeGenMountain.java
+++ b/common/biomesoplenty/biomes/BiomeGenMountain.java
@@ -52,7 +52,8 @@ public class BiomeGenMountain extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenOasis.java b/common/biomesoplenty/biomes/BiomeGenOasis.java
index 5bd969c89..a16635a29 100644
--- a/common/biomesoplenty/biomes/BiomeGenOasis.java
+++ b/common/biomesoplenty/biomes/BiomeGenOasis.java
@@ -50,7 +50,8 @@ public class BiomeGenOasis extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 6, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenOrchard.java b/common/biomesoplenty/biomes/BiomeGenOrchard.java
index 8d9982610..a2c1fa177 100644
--- a/common/biomesoplenty/biomes/BiomeGenOrchard.java
+++ b/common/biomesoplenty/biomes/BiomeGenOrchard.java
@@ -46,7 +46,8 @@ public class BiomeGenOrchard extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenOutback.java b/common/biomesoplenty/biomes/BiomeGenOutback.java
index 474568ec0..7885e3c2f 100644
--- a/common/biomesoplenty/biomes/BiomeGenOutback.java
+++ b/common/biomesoplenty/biomes/BiomeGenOutback.java
@@ -45,7 +45,8 @@ public class BiomeGenOutback extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenPasture.java b/common/biomesoplenty/biomes/BiomeGenPasture.java
index bf2d2a5bd..b6596085f 100644
--- a/common/biomesoplenty/biomes/BiomeGenPasture.java
+++ b/common/biomesoplenty/biomes/BiomeGenPasture.java
@@ -37,7 +37,8 @@ public class BiomeGenPasture extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenPastureMeadow.java b/common/biomesoplenty/biomes/BiomeGenPastureMeadow.java
index 2234998ad..345bc56c3 100644
--- a/common/biomesoplenty/biomes/BiomeGenPastureMeadow.java
+++ b/common/biomesoplenty/biomes/BiomeGenPastureMeadow.java
@@ -39,7 +39,8 @@ public class BiomeGenPastureMeadow extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenPastureThin.java b/common/biomesoplenty/biomes/BiomeGenPastureThin.java
index f40bdaaa8..c0fa1ba09 100644
--- a/common/biomesoplenty/biomes/BiomeGenPastureThin.java
+++ b/common/biomesoplenty/biomes/BiomeGenPastureThin.java
@@ -39,7 +39,8 @@ public class BiomeGenPastureThin extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenPolar.java b/common/biomesoplenty/biomes/BiomeGenPolar.java
index 1d2b475dc..689355a85 100644
--- a/common/biomesoplenty/biomes/BiomeGenPolar.java
+++ b/common/biomesoplenty/biomes/BiomeGenPolar.java
@@ -38,7 +38,8 @@ public class BiomeGenPolar extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenPrairie.java b/common/biomesoplenty/biomes/BiomeGenPrairie.java
index 3ae8439ca..c37017d35 100644
--- a/common/biomesoplenty/biomes/BiomeGenPrairie.java
+++ b/common/biomesoplenty/biomes/BiomeGenPrairie.java
@@ -44,7 +44,8 @@ public class BiomeGenPrairie extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenQuagmire.java b/common/biomesoplenty/biomes/BiomeGenQuagmire.java
index d6caf4217..3b5db2d0c 100644
--- a/common/biomesoplenty/biomes/BiomeGenQuagmire.java
+++ b/common/biomesoplenty/biomes/BiomeGenQuagmire.java
@@ -46,7 +46,8 @@ public class BiomeGenQuagmire extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 10, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenRainforest.java b/common/biomesoplenty/biomes/BiomeGenRainforest.java
index ab191dc84..de9b7135e 100644
--- a/common/biomesoplenty/biomes/BiomeGenRainforest.java
+++ b/common/biomesoplenty/biomes/BiomeGenRainforest.java
@@ -48,7 +48,8 @@ public class BiomeGenRainforest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 6, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenRedwoodForest.java b/common/biomesoplenty/biomes/BiomeGenRedwoodForest.java
index 6122ff3d7..bd1375789 100644
--- a/common/biomesoplenty/biomes/BiomeGenRedwoodForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenRedwoodForest.java
@@ -57,7 +57,8 @@ public class BiomeGenRedwoodForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSavanna.java b/common/biomesoplenty/biomes/BiomeGenSavanna.java
index aac2b2119..b60e1b05b 100644
--- a/common/biomesoplenty/biomes/BiomeGenSavanna.java
+++ b/common/biomesoplenty/biomes/BiomeGenSavanna.java
@@ -42,7 +42,8 @@ public class BiomeGenSavanna extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSavannaPlateau.java b/common/biomesoplenty/biomes/BiomeGenSavannaPlateau.java
index f90786d60..d5623d4ea 100644
--- a/common/biomesoplenty/biomes/BiomeGenSavannaPlateau.java
+++ b/common/biomesoplenty/biomes/BiomeGenSavannaPlateau.java
@@ -42,7 +42,8 @@ public class BiomeGenSavannaPlateau extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenScrubland.java b/common/biomesoplenty/biomes/BiomeGenScrubland.java
index cf04acd50..c7e99259c 100644
--- a/common/biomesoplenty/biomes/BiomeGenScrubland.java
+++ b/common/biomesoplenty/biomes/BiomeGenScrubland.java
@@ -40,7 +40,8 @@ public class BiomeGenScrubland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSeasonalForest.java b/common/biomesoplenty/biomes/BiomeGenSeasonalForest.java
index 113f5616c..895404104 100644
--- a/common/biomesoplenty/biomes/BiomeGenSeasonalForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenSeasonalForest.java
@@ -65,7 +65,8 @@ public class BiomeGenSeasonalForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSeasonalSpruceForest.java b/common/biomesoplenty/biomes/BiomeGenSeasonalSpruceForest.java
index fc5316b19..1e67ac763 100644
--- a/common/biomesoplenty/biomes/BiomeGenSeasonalSpruceForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenSeasonalSpruceForest.java
@@ -65,7 +65,8 @@ public class BiomeGenSeasonalSpruceForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenShrubland.java b/common/biomesoplenty/biomes/BiomeGenShrubland.java
index 745090e71..f0801473d 100644
--- a/common/biomesoplenty/biomes/BiomeGenShrubland.java
+++ b/common/biomesoplenty/biomes/BiomeGenShrubland.java
@@ -42,7 +42,8 @@ public class BiomeGenShrubland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenShrublandForest.java b/common/biomesoplenty/biomes/BiomeGenShrublandForest.java
index f475dea55..93cd2897d 100644
--- a/common/biomesoplenty/biomes/BiomeGenShrublandForest.java
+++ b/common/biomesoplenty/biomes/BiomeGenShrublandForest.java
@@ -42,7 +42,8 @@ public class BiomeGenShrublandForest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSilkglades.java b/common/biomesoplenty/biomes/BiomeGenSilkglades.java
index 7f243dc92..acbeb3954 100644
--- a/common/biomesoplenty/biomes/BiomeGenSilkglades.java
+++ b/common/biomesoplenty/biomes/BiomeGenSilkglades.java
@@ -75,7 +75,8 @@ public class BiomeGenSilkglades extends BiomeGenBase
 				int var9 = par4 + par2Random.nextInt(16);
 				int var10 = par1World.getBlockId(var7, var8, var9);
 
-				if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+				Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 				{
 					par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 10, 2);
 				}
diff --git a/common/biomesoplenty/biomes/BiomeGenSludgepit.java b/common/biomesoplenty/biomes/BiomeGenSludgepit.java
index 9740053a6..10fb0328c 100644
--- a/common/biomesoplenty/biomes/BiomeGenSludgepit.java
+++ b/common/biomesoplenty/biomes/BiomeGenSludgepit.java
@@ -54,7 +54,8 @@ public class BiomeGenSludgepit extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 10, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSpruceWoods.java b/common/biomesoplenty/biomes/BiomeGenSpruceWoods.java
index 5b8328e4f..12afaa1ca 100644
--- a/common/biomesoplenty/biomes/BiomeGenSpruceWoods.java
+++ b/common/biomesoplenty/biomes/BiomeGenSpruceWoods.java
@@ -53,7 +53,8 @@ public class BiomeGenSpruceWoods extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenSteppe.java b/common/biomesoplenty/biomes/BiomeGenSteppe.java
index d9a51f362..49398af52 100644
--- a/common/biomesoplenty/biomes/BiomeGenSteppe.java
+++ b/common/biomesoplenty/biomes/BiomeGenSteppe.java
@@ -46,7 +46,8 @@ public class BiomeGenSteppe extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 2, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTemperateRainforest.java b/common/biomesoplenty/biomes/BiomeGenTemperateRainforest.java
index 0a7c24002..1bc551475 100644
--- a/common/biomesoplenty/biomes/BiomeGenTemperateRainforest.java
+++ b/common/biomesoplenty/biomes/BiomeGenTemperateRainforest.java
@@ -76,7 +76,8 @@ public class BiomeGenTemperateRainforest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTimber.java b/common/biomesoplenty/biomes/BiomeGenTimber.java
index 8bd9b553e..7f3286731 100644
--- a/common/biomesoplenty/biomes/BiomeGenTimber.java
+++ b/common/biomesoplenty/biomes/BiomeGenTimber.java
@@ -59,7 +59,8 @@ public class BiomeGenTimber extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTimberThin.java b/common/biomesoplenty/biomes/BiomeGenTimberThin.java
index 44ec70000..c9e33ba4b 100644
--- a/common/biomesoplenty/biomes/BiomeGenTimberThin.java
+++ b/common/biomesoplenty/biomes/BiomeGenTimberThin.java
@@ -59,7 +59,8 @@ public class BiomeGenTimberThin extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTropicalRainforest.java b/common/biomesoplenty/biomes/BiomeGenTropicalRainforest.java
index 1b8455877..651eb41e4 100644
--- a/common/biomesoplenty/biomes/BiomeGenTropicalRainforest.java
+++ b/common/biomesoplenty/biomes/BiomeGenTropicalRainforest.java
@@ -56,7 +56,8 @@ public class BiomeGenTropicalRainforest extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 6, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTropics.java b/common/biomesoplenty/biomes/BiomeGenTropics.java
index 5d0ead9e4..60988d16f 100644
--- a/common/biomesoplenty/biomes/BiomeGenTropics.java
+++ b/common/biomesoplenty/biomes/BiomeGenTropics.java
@@ -51,7 +51,8 @@ public class BiomeGenTropics extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 6, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenTundra.java b/common/biomesoplenty/biomes/BiomeGenTundra.java
index bdf994325..096f2eb6c 100644
--- a/common/biomesoplenty/biomes/BiomeGenTundra.java
+++ b/common/biomesoplenty/biomes/BiomeGenTundra.java
@@ -42,7 +42,8 @@ public class BiomeGenTundra extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}
diff --git a/common/biomesoplenty/biomes/BiomeGenWoodland.java b/common/biomesoplenty/biomes/BiomeGenWoodland.java
index dacc665e8..2c3979a74 100644
--- a/common/biomesoplenty/biomes/BiomeGenWoodland.java
+++ b/common/biomesoplenty/biomes/BiomeGenWoodland.java
@@ -35,7 +35,8 @@ public class BiomeGenWoodland extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/ocean/BiomeGenOceanAbyss.java b/common/biomesoplenty/biomes/ocean/BiomeGenOceanAbyss.java
index f1f740952..22d036117 100644
--- a/common/biomesoplenty/biomes/ocean/BiomeGenOceanAbyss.java
+++ b/common/biomesoplenty/biomes/ocean/BiomeGenOceanAbyss.java
@@ -33,7 +33,8 @@ public class BiomeGenOceanAbyss extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/ocean/BiomeGenOceanCoral.java b/common/biomesoplenty/biomes/ocean/BiomeGenOceanCoral.java
index 7ae73e912..b81e50987 100644
--- a/common/biomesoplenty/biomes/ocean/BiomeGenOceanCoral.java
+++ b/common/biomesoplenty/biomes/ocean/BiomeGenOceanCoral.java
@@ -36,7 +36,8 @@ public class BiomeGenOceanCoral extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/ocean/BiomeGenOceanKelp.java b/common/biomesoplenty/biomes/ocean/BiomeGenOceanKelp.java
index c6b3a05d7..ed536a32f 100644
--- a/common/biomesoplenty/biomes/ocean/BiomeGenOceanKelp.java
+++ b/common/biomesoplenty/biomes/ocean/BiomeGenOceanKelp.java
@@ -36,7 +36,8 @@ public class BiomeGenOceanKelp extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 12, 2);
 			}
diff --git a/common/biomesoplenty/biomes/vanilla/BiomeGenForestNew.java b/common/biomesoplenty/biomes/vanilla/BiomeGenForestNew.java
index f3fdc024b..c19525468 100644
--- a/common/biomesoplenty/biomes/vanilla/BiomeGenForestNew.java
+++ b/common/biomesoplenty/biomes/vanilla/BiomeGenForestNew.java
@@ -65,7 +65,8 @@ public class BiomeGenForestNew extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/vanilla/BiomeGenHillsNew.java b/common/biomesoplenty/biomes/vanilla/BiomeGenHillsNew.java
index 68dd72446..f270b801e 100644
--- a/common/biomesoplenty/biomes/vanilla/BiomeGenHillsNew.java
+++ b/common/biomesoplenty/biomes/vanilla/BiomeGenHillsNew.java
@@ -50,7 +50,8 @@ public class BiomeGenHillsNew extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Block.oreEmerald.blockID, 0, 2);
 			}
diff --git a/common/biomesoplenty/biomes/vanilla/BiomeGenPlainsNew.java b/common/biomesoplenty/biomes/vanilla/BiomeGenPlainsNew.java
index 9512f99c0..7ef5b423e 100644
--- a/common/biomesoplenty/biomes/vanilla/BiomeGenPlainsNew.java
+++ b/common/biomesoplenty/biomes/vanilla/BiomeGenPlainsNew.java
@@ -43,7 +43,8 @@ public class BiomeGenPlainsNew extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 4, 2);
 			}
diff --git a/common/biomesoplenty/biomes/vanilla/BiomeGenTaigaNew.java b/common/biomesoplenty/biomes/vanilla/BiomeGenTaigaNew.java
index 621d71d44..3edf38d7a 100644
--- a/common/biomesoplenty/biomes/vanilla/BiomeGenTaigaNew.java
+++ b/common/biomesoplenty/biomes/vanilla/BiomeGenTaigaNew.java
@@ -53,7 +53,8 @@ public class BiomeGenTaigaNew extends BiomeGenBase
 			int var9 = par4 + par2Random.nextInt(16);
 			int var10 = par1World.getBlockId(var7, var8, var9);
 
-			if (Block.blocksList[var10].isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
+			Block block = Block.blocksList[var10]; 
+			if (block != null && block.isGenMineableReplaceable(par1World, var7, var8, var9, Block.stone.blockID))
 			{
 				par1World.setBlock(var7, var8, var9, Blocks.amethystOre.get().blockID, 8, 2);
 			}