diff --git a/build.properties b/build.properties
index 142c6d2ef..70fab574c 100644
--- a/build.properties
+++ b/build.properties
@@ -1,4 +1,4 @@
 minecraft_version=1.9.4
-forge_version=12.17.0.1922-1.9.4
+forge_version=12.17.0.1940
 mod_version=4.1.0
 mappings_version=snapshot_nodoc_20160519
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPBones.java b/src/main/java/biomesoplenty/common/block/BlockBOPBones.java
index af248c2ec..5df547352 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPBones.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPBones.java
@@ -27,6 +27,8 @@ import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPBones extends Block implements IBOPBlock
 {
@@ -51,8 +53,10 @@ public class BlockBOPBones extends Block implements IBOPBlock
     @Override
     protected BlockStateContainer createBlockState() {return new BlockStateContainer(this, new IProperty[] { AXIS, VARIANT });}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // implement IBOPBlock
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPCrystal.java b/src/main/java/biomesoplenty/common/block/BlockBOPCrystal.java
index 1d8b5e747..9cfda9f73 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPCrystal.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPCrystal.java
@@ -25,6 +25,8 @@ import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPCrystal extends Block implements IBOPBlock
 {
@@ -39,8 +41,10 @@ public class BlockBOPCrystal extends Block implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPCrystal() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPDecoration.java b/src/main/java/biomesoplenty/common/block/BlockBOPDecoration.java
index 13d3dc151..abfb25781 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPDecoration.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPDecoration.java
@@ -42,8 +42,10 @@ public class BlockBOPDecoration extends Block implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // constructor
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPDirt.java b/src/main/java/biomesoplenty/common/block/BlockBOPDirt.java
index 73075c6bf..02acb6454 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPDirt.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPDirt.java
@@ -31,6 +31,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.EnumPlantType;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPDirt extends Block implements IBOPBlock, ISustainsPlantType
 {
@@ -67,8 +69,10 @@ public class BlockBOPDirt extends Block implements IBOPBlock, ISustainsPlantType
         return (Boolean.TRUE.equals(state.getValue(COARSE)) ? "coarse_" : "") + ((BOPDirtType) state.getValue(VARIANT)).getName() + "_dirt";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPDirt() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPDoor.java b/src/main/java/biomesoplenty/common/block/BlockBOPDoor.java
index ead56d73e..0c7a9af37 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPDoor.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPDoor.java
@@ -44,8 +44,10 @@ public class BlockBOPDoor extends BlockDoor implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // Map from woods to BlockBOPDoor instance and back
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPDoubleWoodSlab.java b/src/main/java/biomesoplenty/common/block/BlockBOPDoubleWoodSlab.java
index 4995877cb..b982e5343 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPDoubleWoodSlab.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPDoubleWoodSlab.java
@@ -87,8 +87,10 @@ public class BlockBOPDoubleWoodSlab extends BlockSlab implements IBOPBlock
         return "double_" + ((BOPWoods)state.getValue(this.variantProperty)).getName() + "_wood_slab";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     private BlockBOPDoubleWoodSlab()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPFarmland.java b/src/main/java/biomesoplenty/common/block/BlockBOPFarmland.java
index a0606dc96..a232bd4eb 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPFarmland.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPFarmland.java
@@ -37,6 +37,8 @@ import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.EnumPlantType;
 import net.minecraftforge.common.IPlantable;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPFarmland extends BlockFarmland implements IBOPBlock
 {
@@ -78,8 +80,10 @@ public class BlockBOPFarmland extends BlockFarmland implements IBOPBlock
         return ((BlockBOPDirt.BOPDirtType) state.getValue(this.variantProperty)).getName() + "_farmland";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPFarmland()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPFence.java b/src/main/java/biomesoplenty/common/block/BlockBOPFence.java
index 6fdd91e16..41e875aa0 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPFence.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPFence.java
@@ -26,6 +26,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPFence extends BlockFence implements IBOPBlock
 {
@@ -40,8 +42,10 @@ public class BlockBOPFence extends BlockFence implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // Map from woods to BlockBOPFence instance and back
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPFenceGate.java b/src/main/java/biomesoplenty/common/block/BlockBOPFenceGate.java
index 5f3e60ae5..861c5a5b0 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPFenceGate.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPFenceGate.java
@@ -25,6 +25,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPFenceGate extends BlockFenceGate implements IBOPBlock
 {
@@ -40,8 +42,10 @@ public class BlockBOPFenceGate extends BlockFenceGate implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // Map from woods to BlockBOPFenceGate instance and back
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPFlesh.java b/src/main/java/biomesoplenty/common/block/BlockBOPFlesh.java
index a56c0c01f..ce3b4bd28 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPFlesh.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPFlesh.java
@@ -44,8 +44,10 @@ public class BlockBOPFlesh extends Block implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPFlesh() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPGem.java b/src/main/java/biomesoplenty/common/block/BlockBOPGem.java
index d4dff1632..dfd99689c 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPGem.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPGem.java
@@ -20,6 +20,8 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.renderer.color.IBlockColor;
 import net.minecraft.client.renderer.color.IItemColor;
 import net.minecraft.item.ItemBlock;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPGem extends Block implements IBOPBlock
 {
@@ -42,8 +44,10 @@ public class BlockBOPGem extends Block implements IBOPBlock
         return ((BOPGems) state.getValue(VARIANT)).getName() + "_block";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPGem()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPGemOre.java b/src/main/java/biomesoplenty/common/block/BlockBOPGemOre.java
index ac00ecbe1..89c4722ec 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPGemOre.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPGemOre.java
@@ -30,6 +30,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPGemOre extends Block implements IBOPBlock
 {
@@ -52,8 +54,10 @@ public class BlockBOPGemOre extends Block implements IBOPBlock
         return ((BOPGems) state.getValue(VARIANT)).getName() + "_ore";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPGemOre()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPGeneric.java b/src/main/java/biomesoplenty/common/block/BlockBOPGeneric.java
index fa6755b0e..135c41955 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPGeneric.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPGeneric.java
@@ -24,6 +24,8 @@ import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraftforge.common.EnumPlantType;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPGeneric extends Block implements IBOPBlock, ISustainsPlantType
 {
@@ -38,8 +40,10 @@ public class BlockBOPGeneric extends Block implements IBOPBlock, ISustainsPlantT
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPGeneric() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPGrass.java b/src/main/java/biomesoplenty/common/block/BlockBOPGrass.java
index 32197d7d5..139fcccf6 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPGrass.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPGrass.java
@@ -84,8 +84,10 @@ public class BlockBOPGrass extends BlockGrass implements IBOPBlock, ISustainsPla
         }
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return BlockColoring.GRASS_COLORING; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return BlockColoring.BLOCK_ITEM_COLORING; }
     
     public BlockBOPGrass()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPHalfOtherSlab.java b/src/main/java/biomesoplenty/common/block/BlockBOPHalfOtherSlab.java
index ef945ca20..1e3e43e52 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPHalfOtherSlab.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPHalfOtherSlab.java
@@ -85,8 +85,10 @@ public class BlockBOPHalfOtherSlab extends BlockSlab implements IBOPBlock
         return ((SlabType) state.getValue(VARIANT)).getName() + "_slab";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public IBlockState getFullBlockVariantState(SlabType type)
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPHalfWoodSlab.java b/src/main/java/biomesoplenty/common/block/BlockBOPHalfWoodSlab.java
index 74a15cff3..339b69773 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPHalfWoodSlab.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPHalfWoodSlab.java
@@ -85,8 +85,10 @@ public class BlockBOPHalfWoodSlab extends BlockSlab implements IBOPBlock
         return ((BOPWoods) state.getValue(this.variantProperty)).getName() + "_wood_slab";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     private BlockBOPHalfWoodSlab()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPHive.java b/src/main/java/biomesoplenty/common/block/BlockBOPHive.java
index 7fca97995..38fb3b46e 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPHive.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPHive.java
@@ -27,6 +27,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.IStringSerializable;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPHive extends Block implements IBOPBlock
 {
@@ -64,8 +66,10 @@ public class BlockBOPHive extends Block implements IBOPBlock
         return ((HiveType) state.getValue(VARIANT)).getName() + "_block";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPHive()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPHoney.java b/src/main/java/biomesoplenty/common/block/BlockBOPHoney.java
index ee6932546..ead342012 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPHoney.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPHoney.java
@@ -34,8 +34,10 @@ public class BlockBOPHoney extends Block implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPHoney() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPLilypad.java b/src/main/java/biomesoplenty/common/block/BlockBOPLilypad.java
index 28f413fcc..dc38465b1 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPLilypad.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPLilypad.java
@@ -88,6 +88,7 @@ public class BlockBOPLilypad extends BlockLilyPad implements IBOPBlock
         };
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPLilypad()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPLog.java b/src/main/java/biomesoplenty/common/block/BlockBOPLog.java
index 9d757d4d4..e54ce6600 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPLog.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPLog.java
@@ -22,6 +22,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPLog extends BlockLog implements IBOPBlock
 {
@@ -79,8 +81,10 @@ public class BlockBOPLog extends BlockLog implements IBOPBlock
         }
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     private BlockBOPLog()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPMud.java b/src/main/java/biomesoplenty/common/block/BlockBOPMud.java
index c2846ebb1..ea69bceb7 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPMud.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPMud.java
@@ -33,6 +33,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.EnumPlantType;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPMud extends Block implements IBOPBlock, ISustainsPlantType
 {
@@ -71,8 +73,10 @@ public class BlockBOPMud extends Block implements IBOPBlock, ISustainsPlantType
         return ((MudType) state.getValue(VARIANT)).getName();
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPMud() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPPlanks.java b/src/main/java/biomesoplenty/common/block/BlockBOPPlanks.java
index 1f7ec04c8..f01e5cb70 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPPlanks.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPPlanks.java
@@ -24,6 +24,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPPlanks extends Block implements IBOPBlock
 {
@@ -75,8 +77,10 @@ public class BlockBOPPlanks extends Block implements IBOPBlock
         return ((BOPWoods) state.getValue(this.variantProperty)).getName() + "_planks";
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPPlanks()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPSand.java b/src/main/java/biomesoplenty/common/block/BlockBOPSand.java
index f88e78606..041b434b5 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPSand.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPSand.java
@@ -27,6 +27,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.EnumPlantType;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPSand extends BlockFalling implements IBOPBlock, ISustainsPlantType
 {
@@ -64,8 +66,10 @@ public class BlockBOPSand extends BlockFalling implements IBOPBlock, ISustainsPl
         return ((SandType) state.getValue(VARIANT)).getName();
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPSand() {
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPStone.java b/src/main/java/biomesoplenty/common/block/BlockBOPStone.java
index 789fcecab..e1b8b07b6 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPStone.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPStone.java
@@ -25,6 +25,8 @@ import net.minecraft.util.IStringSerializable;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.Explosion;
 import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPStone extends Block implements IBOPBlock
 {
@@ -63,8 +65,10 @@ public class BlockBOPStone extends Block implements IBOPBlock
         return (Boolean.TRUE.equals(state.getValue(POLISHED)) ? "polished_" : "") + ((StoneType) state.getValue(VARIANT)).getName();
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPStone()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPTerrarium.java b/src/main/java/biomesoplenty/common/block/BlockBOPTerrarium.java
index 57b860413..8c9fe4ac9 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPTerrarium.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPTerrarium.java
@@ -24,6 +24,8 @@ import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPTerrarium extends Block implements IBOPBlock
 {
@@ -67,8 +69,10 @@ public class BlockBOPTerrarium extends Block implements IBOPBlock
         }
     }
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     public BlockBOPTerrarium()
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPTurnip.java b/src/main/java/biomesoplenty/common/block/BlockBOPTurnip.java
index afabb439b..55312d9ca 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPTurnip.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPTurnip.java
@@ -21,6 +21,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraftforge.common.EnumPlantType;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 // TODO: stop snow settling on this (floats above it)
 public class BlockBOPTurnip extends BlockCrops implements IBOPBlock
@@ -36,8 +38,10 @@ public class BlockBOPTurnip extends BlockCrops implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     @Override
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPVine.java b/src/main/java/biomesoplenty/common/block/BlockBOPVine.java
index 658462bec..eb7eb6e8a 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPVine.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPVine.java
@@ -20,6 +20,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPVine extends BlockVine implements IBOPBlock
 {  
@@ -34,8 +36,10 @@ public class BlockBOPVine extends BlockVine implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return useGreyScaleTextures ? BlockColoring.FOLIAGE_COLORING : null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return BlockColoring.BLOCK_ITEM_COLORING; }
     
     // if set to true, (the default), use BlockVine getBlockColor(), getRenderColor() and colorMultiplier() functions to color the texture based on biome
diff --git a/src/main/java/biomesoplenty/common/block/BlockBOPWoodStairs.java b/src/main/java/biomesoplenty/common/block/BlockBOPWoodStairs.java
index c82a01a4a..8c48212d1 100644
--- a/src/main/java/biomesoplenty/common/block/BlockBOPWoodStairs.java
+++ b/src/main/java/biomesoplenty/common/block/BlockBOPWoodStairs.java
@@ -23,6 +23,8 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public class BlockBOPWoodStairs extends BlockStairs implements IBOPBlock
 {
@@ -38,8 +40,10 @@ public class BlockBOPWoodStairs extends BlockStairs implements IBOPBlock
     @Override
     public String getStateName(IBlockState state) {return "";}
     @Override
+    @SideOnly(Side.CLIENT)
     public IBlockColor getBlockColor() { return null; }
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor() { return null; }
     
     // Map from woods to BlockBOPStairs instance and back
diff --git a/src/main/java/biomesoplenty/common/item/ItemBOPSpawnEgg.java b/src/main/java/biomesoplenty/common/item/ItemBOPSpawnEgg.java
index d99b4e5cb..82bb7765a 100644
--- a/src/main/java/biomesoplenty/common/item/ItemBOPSpawnEgg.java
+++ b/src/main/java/biomesoplenty/common/item/ItemBOPSpawnEgg.java
@@ -86,8 +86,8 @@ public class ItemBOPSpawnEgg extends Item implements IColoredItem
         return super.getUnlocalizedName(stack)+"_"+entityName;
     }
     
-    @SideOnly(Side.CLIENT)
     @Override
+    @SideOnly(Side.CLIENT)
     public IItemColor getItemColor()
     {
         return new IItemColor()