Got some IC2 stuff working now. Turns out I was being stupid.

src/main/java/mekanism/api/gas/FuelHandler.java

@@ -3,12 +3,10 @@ package mekanism.api.gas;
 import java.util.HashMap;
 
 import mekanism.common.Mekanism;
-import mekanism.common.util.MekanismUtils;
 
 import net.minecraftforge.fluids.FluidContainerRegistry;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
-import cpw.mods.fml.common.Optional.Method;
 
 import buildcraft.api.fuels.IronEngineFuel;
 import buildcraft.api.fuels.IronEngineFuel.Fuel;
@@ -29,7 +27,7 @@ public class FuelHandler
 			return fuels.get(gas.getName());
 		}
 
-		if(Loader.isModLoaded("BuildCraftAPI|fuel") && gas.hasFluid())
+		if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|fuel") && gas.hasFluid())
 		{
 			Fuel bcFuel = IronEngineFuel.getFuelForFluid(gas.getFluid());
 			

src/main/java/mekanism/common/Mekanism.java

@@ -1434,7 +1434,7 @@ public class Mekanism
 				{
 					TileEntity tileEntity = (TileEntity)obj;
 	
-					if(tileEntity instanceof TileEntityElectricBlock)
+					if(tileEntity instanceof TileEntityElectricBlock && MekanismUtils.useIC2())
 					{
 						((TileEntityElectricBlock)tileEntity).register();
 					}

src/main/java/mekanism/common/block/BlockEnergyCube.java

@@ -13,6 +13,8 @@ import mekanism.common.item.ItemBlockEnergyCube;
 import mekanism.common.tile.TileEntityBasicBlock;
 import mekanism.common.tile.TileEntityElectricBlock;
 import mekanism.common.tile.TileEntityEnergyCube;
+import mekanism.common.util.MekanismUtils;
+
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockContainer;
 import net.minecraft.block.material.Material;
@@ -32,7 +34,7 @@ import net.minecraft.world.World;
 import net.minecraftforge.common.util.ForgeDirection;
 import buildcraft.api.tools.IToolWrench;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -153,7 +155,7 @@ public class BlockEnergyCube extends BlockContainer
 			{
 				Item tool = entityplayer.getCurrentEquippedItem().getItem();
 
-				if(Loader.isModLoaded("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
+				if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
 				{
 					if(((IToolWrench)tool).canWrench(entityplayer, x, y, z))
 					{
@@ -229,7 +231,8 @@ public class BlockEnergyCube extends BlockContainer
 	@Override
 	public TileEntity createNewTileEntity(World world, int meta)
 	{
-		return new TileEntityEnergyCube();
+		TileEntityEnergyCube tile = new TileEntityEnergyCube();
+		return tile;
 	}
 
 	@Override
@@ -273,7 +276,7 @@ public class BlockEnergyCube extends BlockContainer
 	{
 		TileEntity tileEntity = world.getTileEntity(x, y, z);
 
-		if(!world.isRemote)
+		if(!world.isRemote && MekanismUtils.useIC2())
 		{
 			((TileEntityElectricBlock)tileEntity).register();
 		}

src/main/java/mekanism/common/block/BlockGasTank.java

@@ -23,7 +23,7 @@ import net.minecraft.util.MovingObjectPosition;
 import net.minecraft.world.World;
 import buildcraft.api.tools.IToolWrench;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -98,7 +98,7 @@ public class BlockGasTank extends BlockContainer
 		{
 			Item tool = entityplayer.getCurrentEquippedItem().getItem();
 
-			if(Loader.isModLoaded("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
+			if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
 			{
 				if(((IToolWrench)tool).canWrench(entityplayer, x, y, z))
 				{

src/main/java/mekanism/common/block/BlockMachine.java

@@ -86,7 +86,7 @@ import net.minecraftforge.fluids.FluidContainerRegistry;
 import net.minecraftforge.fluids.FluidStack;
 import buildcraft.api.tools.IToolWrench;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import dan200.computercraft.api.peripheral.IPeripheral;
@@ -659,7 +659,7 @@ public class BlockMachine extends BlockContainer implements ISpecialBounds, IPer
 		{
 			Item tool = entityplayer.getCurrentEquippedItem().getItem();
 
-			if(Loader.isModLoaded("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
+			if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|tools") && tool instanceof IToolWrench && !tool.getUnlocalizedName().contains("omniwrench"))
 			{
 				if(((IToolWrench)tool).canWrench(entityplayer, x, y, z))
 				{
@@ -1229,7 +1229,7 @@ public class BlockMachine extends BlockContainer implements ISpecialBounds, IPer
 
 		if(!world.isRemote)
 		{
-			if(tileEntity instanceof TileEntityElectricBlock)
+			if(tileEntity instanceof TileEntityElectricBlock && MekanismUtils.useIC2())
 			{
 				((TileEntityElectricBlock)tileEntity).register();
 			}

src/main/java/mekanism/common/multipart/PartSidedPipe.java

@@ -48,7 +48,7 @@ import codechicken.multipart.PartMap;
 import codechicken.multipart.TMultiPart;
 import codechicken.multipart.TSlottedPart;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -423,7 +423,7 @@ public abstract class PartSidedPipe extends TMultiPart implements TSlottedPart,
 			return false;
 		}
 
-		if(Loader.isModLoaded("BuildCraftAPI|tools") && item.getItem() instanceof IToolWrench && !(item.getItem() instanceof ItemConfigurator) && player.isSneaking())
+		if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|tools") && item.getItem() instanceof IToolWrench && !(item.getItem() instanceof ItemConfigurator) && player.isSneaking())
 		{
 			if(!world().isRemote)
 			{

src/main/java/mekanism/common/multipart/PartUniversalCable.java

@@ -1,6 +1,6 @@
 package mekanism.common.multipart;
 
-//import ic2.api.energy.tile.IEnergySource;
+import ic2.api.energy.tile.IEnergySource;
 
 import java.util.List;
 import java.util.Set;
@@ -92,7 +92,7 @@ public class PartUniversalCable extends PartTransmitter<EnergyNetwork> implement
 				cacheEnergy = 0;
 			}
 
-			/*if(MekanismUtils.useIC2())
+			if(MekanismUtils.useIC2())
 			{
 				List<ForgeDirection> sides = getConnections(ConnectionType.PULL);
 				if(!sides.isEmpty())
@@ -119,7 +119,7 @@ public class PartUniversalCable extends PartTransmitter<EnergyNetwork> implement
 						}
 					}
 				}
-			}*/
+			}
 		}
 
 		super.update();

src/main/java/mekanism/common/tile/TileEntityBasicBlock.java

@@ -175,7 +175,6 @@ public abstract class TileEntityBasicBlock extends TileEntity implements IWrench
 	}
 
 	@Override
-	@Method(modid = "IC2API")
 	public void setFacing(short direction)
 	{
 		if(canSetFacing(direction))

src/main/java/mekanism/common/tile/TileEntityBasicMachine.java

@@ -27,13 +27,6 @@ import cpw.mods.fml.common.Optional.InterfaceList;
 import dan200.computercraft.api.peripheral.IComputerAccess;
 import dan200.computercraft.api.peripheral.IPeripheral;
 
-@InterfaceList({
-		@Interface(iface = "ic2.api.energy.tile.IEnergySink", modid = "IC2API", striprefs = true),
-		@Interface(iface = "ic2.api.tile.IEnergyStorage", modid = "IC2API", striprefs = true),
-		@Interface(iface = "cofh.api.energy.IEnergyHandler", modid = "CoFHAPI|energy"),
-		@Interface(iface = "buildcraft.api.power.IPowerReceptor", modid = "BuildCraftAPI|power"),
-		@Interface(iface = "buildcraft.api.power.IPowerEmitter", modid = "BuildCraftAPI|power")
-})
 public abstract class TileEntityBasicMachine extends TileEntityElectricBlock implements IElectricMachine, IPeripheral, IActiveState, IInvConfiguration, IUpgradeTile, IHasSound, IRedstoneControl
 {
 	/** This machine's side configuration. */

src/main/java/mekanism/common/tile/TileEntityElectricBlock.java

@@ -22,7 +22,6 @@ import net.minecraft.tileentity.TileEntity;
 import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.util.ForgeDirection;
-import cpw.mods.fml.common.Loader;
 import cpw.mods.fml.common.Optional.Interface;
 import cpw.mods.fml.common.Optional.InterfaceList;
 import cpw.mods.fml.common.Optional.Method;
@@ -62,7 +61,7 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 		super(name);
 		MAX_ELECTRICITY = maxEnergy;
 
-		if(Loader.isModLoaded("BuildCraftAPI|power"))
+		if(MekanismUtils.useBuildCraft())
 		{
 			powerHandler = new PowerHandler(this, PowerHandler.Type.STORAGE);
 			powerHandler.configurePowerPerdition(0, 0);
@@ -70,9 +69,10 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 		}
 	}
 
+	@Method(modid = "IC2API")
 	public void register()
 	{
-		if(!worldObj.isRemote && Loader.isModLoaded("IC2API"))
+		if(!worldObj.isRemote)
 		{
 			if(!Mekanism.ic2Registered.contains(Coord4D.get(this)))
 			{
@@ -81,10 +81,11 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 			}
 		}
 	}
-	
+
+	@Method(modid = "IC2API")
 	public void deregister()
 	{
-		if(!worldObj.isRemote && Loader.isModLoaded("IC2API"))
+		if(!worldObj.isRemote)
 		{
 			if(Mekanism.ic2Registered.contains(Coord4D.get(this)))
 			{
@@ -154,6 +155,7 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 	@Override
 	public void onChunkUnload()
 	{
+		if(MekanismUtils.useIC2())
 		deregister();
 
 		super.onChunkUnload();
@@ -163,7 +165,8 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 	public void invalidate()
 	{
 		super.invalidate();
-		
+
+		if(MekanismUtils.useIC2())
 		deregister();
 	}
 
@@ -198,7 +201,7 @@ public abstract class TileEntityElectricBlock extends TileEntityContainerBlock i
 
 	protected void reconfigure()
 	{
-		if(Loader.isModLoaded("BuildCraftAPI|power"))
+		if(MekanismUtils.useBuildCraft())
 		{
 			powerHandler.configure(1, (float)((getMaxEnergy()-getEnergy())*Mekanism.TO_BC), 0, (float)(getMaxEnergy()*Mekanism.TO_BC));
 		}

src/main/java/mekanism/common/tile/TileEntityElectricMachine.java

@@ -17,13 +17,6 @@ import cpw.mods.fml.common.Optional.InterfaceList;
 import dan200.computercraft.api.lua.ILuaContext;
 import dan200.computercraft.api.peripheral.IComputerAccess;
 
-@InterfaceList({
-		@Interface(iface = "ic2.api.energy.tile.IEnergySink", modid = "IC2API", striprefs = true),
-		@Interface(iface = "ic2.api.tile.IEnergyStorage", modid = "IC2API", striprefs = true),
-		@Interface(iface = "cofh.api.energy.IEnergyHandler", modid = "CoFHAPI|energy"),
-		@Interface(iface = "buildcraft.api.power.IPowerReceptor", modid = "BuildCraftAPI|power"),
-		@Interface(iface = "buildcraft.api.power.IPowerEmitter", modid = "BuildCraftAPI|power")
-})
 public abstract class TileEntityElectricMachine extends TileEntityBasicMachine
 {
 	/**

src/main/java/mekanism/common/tile/TileEntityEnergizedSmelter.java

@@ -6,17 +6,12 @@ import java.util.Map;
 import mekanism.client.gui.GuiProgress.ProgressBar;
 import mekanism.common.Mekanism;
 import mekanism.common.block.BlockMachine.MachineType;
+import mekanism.common.recipe.RecipeHandler;
+
 import net.minecraft.item.ItemStack;
 import cpw.mods.fml.common.Optional.Interface;
 import cpw.mods.fml.common.Optional.InterfaceList;
 
-@InterfaceList({
-		@Interface(iface = "ic2.api.energy.tile.IEnergySink", modid = "IC2API", striprefs = true),
-		@Interface(iface = "ic2.api.tile.IEnergyStorage", modid = "IC2API", striprefs = true),
-		@Interface(iface = "cofh.api.energy.IEnergyHandler", modid = "CoFHAPI|energy"),
-		@Interface(iface = "buildcraft.api.power.IPowerReceptor", modid = "BuildCraftAPI|power"),
-		@Interface(iface = "buildcraft.api.power.IPowerEmitter", modid = "BuildCraftAPI|power")
-})
 public class TileEntityEnergizedSmelter extends TileEntityElectricMachine
 {
 	public static Map<ItemStack, ItemStack> furnaceRecipes = new HashMap<ItemStack, ItemStack>();

src/main/java/mekanism/common/tile/TileEntityEnergyCube.java

@@ -37,8 +37,6 @@ public class TileEntityEnergyCube extends TileEntityElectricBlock implements IPe
 
 	/**
 	 * A block used to store and transfer electricity.
-	 * @param energy - maximum energy this block can hold.
-	 * @param i - output per tick this block can handle.
 	 */
 	public TileEntityEnergyCube()
 	{

src/main/java/mekanism/generators/common/MekanismGenerators.java

@@ -25,10 +25,10 @@ import net.minecraftforge.fluids.FluidContainerRegistry;
 import net.minecraftforge.fluids.FluidRegistry;
 import buildcraft.api.fuels.IronEngineFuel;
 
-import cpw.mods.fml.common.Loader;
 import cpw.mods.fml.common.Mod;
 import cpw.mods.fml.common.Mod.EventHandler;
 import cpw.mods.fml.common.Mod.Instance;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.common.SidedProxy;
 import cpw.mods.fml.common.event.FMLInitializationEvent;
 import cpw.mods.fml.common.event.FMLPostInitializationEvent;
@@ -63,7 +63,7 @@ public class MekanismGenerators implements IModule
 	@EventHandler
 	public void postInit(FMLPostInitializationEvent event)
 	{
-		if(Loader.isModLoaded("BuildCraftAPI|fuels"))
+		if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|fuels"))
 		{
 			for(String s : IronEngineFuel.fuels.keySet())
 			{

src/main/java/mekanism/generators/common/block/BlockGenerator.java

@@ -40,7 +40,7 @@ import net.minecraft.world.World;
 import net.minecraftforge.common.util.ForgeDirection;
 import buildcraft.api.tools.IToolWrench;
 
-import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModAPIManager;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -304,7 +304,7 @@ public class BlockGenerator extends BlockContainer implements ISpecialBounds
 
 		if(entityplayer.getCurrentEquippedItem() != null)
 		{
-			if(Loader.isModLoaded("BuildCraftAPI|tools") && entityplayer.getCurrentEquippedItem().getItem() instanceof IToolWrench && !entityplayer.getCurrentEquippedItem().getUnlocalizedName().contains("omniwrench"))
+			if(ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|tools") && entityplayer.getCurrentEquippedItem().getItem() instanceof IToolWrench && !entityplayer.getCurrentEquippedItem().getUnlocalizedName().contains("omniwrench"))
 			{
 				if(entityplayer.isSneaking())
 				{
@@ -502,7 +502,7 @@ public class BlockGenerator extends BlockContainer implements ISpecialBounds
 
 		if(!world.isRemote)
 		{
-			if(tileEntity != null)
+			if(tileEntity != null && MekanismUtils.useIC2())
 			{
 				((TileEntityElectricBlock)tileEntity).register();
 			}

src/main/java/mekanism/generators/common/tile/TileEntityGenerator.java

@@ -49,7 +49,10 @@ public abstract class TileEntityGenerator extends TileEntityElectricBlock implem
 	{
 		super(name, maxEnergy);
 
-		powerHandler.configure(0, 0, 0, 0);
+		if(MekanismUtils.useBuildCraft())
+		{
+			powerHandler.configure(0, 0, 0, 0);
+		}
 
 		output = out;
 		isActive = false;