@SideOnly(Side.CLIENT)

src/dark/core/client/ClientProxy.java

@@ -8,17 +8,18 @@ import cpw.mods.fml.client.FMLClientHandler;
 import cpw.mods.fml.client.registry.ClientRegistry;
 import cpw.mods.fml.common.FMLCommonHandler;
 import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import dark.core.client.renders.RenderCopperWire;
 import dark.core.common.CommonProxy;
 import dark.core.common.CoreRecipeLoader;
 import dark.core.common.DarkMain;
 import dark.core.common.transmit.TileEntityWire;
-
+@SideOnly(Side.CLIENT)
 public class ClientProxy extends CommonProxy
 {
 
     /** Renders a laser beam from one power to another by a set color for a set time
-     * 
+     *
      * @param world - world this laser is to be rendered in
      * @param position - start vector3
      * @param target - end vector3

src/dark/core/client/FXBeam.java

@@ -14,11 +14,14 @@ import org.lwjgl.opengl.GL11;
 
 import universalelectricity.core.vector.Vector3;
 import cpw.mods.fml.client.FMLClientHandler;
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import dark.core.common.DarkMain;
 
 /** Based off Thaumcraft's Beam Renderer.
- * 
+ *
  * @author Calclavia, Azanor */
+@SideOnly(Side.CLIENT)
 public class FXBeam extends EntityFX
 {
     double movX = 0.0D;

src/dark/core/client/renders/FluidBlockRenderer.java

@@ -14,10 +14,14 @@ import net.minecraftforge.fluids.FluidStack;
 
 import org.lwjgl.opengl.GL11;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
+
 import universalelectricity.core.vector.Vector3;
 import dark.core.prefab.helpers.BlockRenderInfo;
 
 /** @author CovertJaguar <railcraft.wikispaces.com> from BuildCraft , modified by DarkGuardsman */
+@SideOnly(Side.CLIENT)
 public class FluidBlockRenderer
 {
     private static Map<Fluid, int[]> flowingRenderCache = new HashMap<Fluid, int[]>();

src/dark/core/client/renders/RenderFakeBlock.java

@@ -18,10 +18,13 @@ import net.minecraft.world.World;
 
 import org.lwjgl.opengl.GL11;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
+
 import universalelectricity.core.vector.Vector3;
 import dark.core.prefab.helpers.BlockRenderInfo;
 import dark.core.prefab.helpers.EntityFakeBlock;
-
+@SideOnly(Side.CLIENT)
 public class RenderFakeBlock extends Render
 {
     /** Render instance */
@@ -86,7 +89,7 @@ public class RenderFakeBlock extends Render
     }
 
     /** Renders a block at given location
-     * 
+     *
      * @param blockInterface - class used to store info for the render process
      * @param world - world rendering in
      * @param x - position on x axis

src/dark/core/common/blocks/BlockBasalt.java

@@ -51,6 +51,7 @@ public class BlockBasalt extends Block
     }
 
     @Override
+    @SideOnly(Side.CLIENT)
     public boolean renderAsNormalBlock()
     {
         return true;
@@ -62,6 +63,8 @@ public class BlockBasalt extends Block
         return true;
     }
 
+    @Override
+    @SideOnly(Side.CLIENT)
     public Icon getIcon(int side, int meta)
     {
         if (meta < this.icons.length)

src/dark/core/common/blocks/BlockColorGlass.java

@@ -28,6 +28,7 @@ public class BlockColorGlass extends BlockColored
     }
 
     @SideOnly(Side.CLIENT)
+    @Override
     public int getRenderBlockPass()
     {
         return 1;
@@ -39,7 +40,7 @@ public class BlockColorGlass extends BlockColored
         return false;
     }
 
-    @Override
+    @Override @SideOnly(Side.CLIENT)
     public boolean renderAsNormalBlock()
     {
         return false;

src/dark/core/common/blocks/BlockColorSand.java

@@ -22,16 +22,19 @@ public class BlockColorSand extends BlockColored
 
     public static boolean fallInstantly = true;
 
+    @Override
     public void onBlockAdded(World par1World, int par2, int par3, int par4)
     {
         par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
     }
 
+    @Override
     public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
     {
         par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
     }
 
+    @Override
     public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
     {
         if (!par1World.isRemote)

src/dark/core/common/blocks/BlockOre.java

@@ -3,6 +3,9 @@ package dark.core.common.blocks;
 import java.util.List;
 import java.util.Set;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
+
 import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.client.renderer.texture.IconRegister;
@@ -40,7 +43,7 @@ public class BlockOre extends Block implements IExtraObjectInfo
         }
     }
 
-    @Override
+    @Override @SideOnly(Side.CLIENT)
     public void registerIcons(IconRegister par1IconRegister)
     {
         for (int i = 0; i < EnumMeterials.values().length; i++)
@@ -52,7 +55,7 @@ public class BlockOre extends Block implements IExtraObjectInfo
         }
     }
 
-    @Override
+    @Override @SideOnly(Side.CLIENT)
     public Icon getIcon(int side, int metadata)
     {
         if (this.icons[metadata] != null)