Custom Crafting Table

Hello, I am making a block that is identical in  many ways to a crafting table but with extra recipes.

Therefore I am using some of the crafting table parts to create my own custom one.

However, when I use it, nothing appears, it just spits out my debug messages saying it has been clicked, it has opened and a GUI is being shown to the client and a container to the server.

I expect it to open a crafting GUI and allow me to craft things and when you change any slot it outputs "Change!" but it just carries on.

GuiHandler:

public class GuiHandler implements IGuiHandler {
@Override
public Object getServerGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
	if (id == 0) {
	        log.info("Load Server");
		return new ContainerCrafting(player.inventory, world, x, y, z);
	}
	return null;
}

@Override
public Object getClientGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
        if (id == 0) {
          	log.info("Load Client");
        	return new GuiCrafting(player.inventory, world, x, y, z);
        }
        return null;
    }
}

Main Class

NetworkRegistry.INSTANCE.registerGuiHandler(this, new GuiHandler());

GuiCrafting:

public class GuiCrafting extends GuiCrafting{

public GuiCrafting(InventoryPlayer par1InventoryPlayer, World par2World, int par3, int par4, int par5) {
	super(par1InventoryPlayer, par2World, par3, par4, par5);
	log.info("Loaded GUI!");
}

}

ContainerCrafting:

public class ContainerCrafting extends ContainerWorkbench{
private World worldObj;
public ContainerCrafting(InventoryPlayer inventory, World world, int x, int y, int z) {
	super(inventory, world, x, y, z);
	worldObj = world;
	log.info("Loaded Server Container!");
}

@Override
        public void onCraftMatrixChanged(IInventory par1IInventory)
        {
	log.info("Change!");
                this.craftResult.setInventorySlotContents(0, CraftingManager.getInstance().findMatchingRecipe(this.craftMatrix, this.worldObj));
    }
}

Output (When block clicked)

    Load Server

    Change!

    Loaded Server Container!

    Load Client

    Loaded GUI!