I'm sitting here now for hours, and I do'nt know why this isn't working, I have some problem with my Container and GuiContainer:

 

PS: I'm definetly not new to java, but maybe sometimes a experienced person gets some mistakes

 

 

public class GuiHandler implements IGuiHandler{

@Override
public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	TileEntity tileEntity = world.getTileEntity(new BlockPos(x, y, z));
	if(tileEntity instanceof TileEntityArmorModifier){
		return new ContainerArmorModifier(player.inventory, (TileEntityArmorModifier) tileEntity);
	}
	return null;
}

@Override
public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	TileEntity tileEntity = world.getTileEntity(new BlockPos(x, y, z));
	if(tileEntity instanceof TileEntityArmorModifier){
		return new GuiArmorModifier(player.inventory, (TileEntityArmorModifier) tileEntity);
	}

	return null;
}

}

 

public class ContainerArmorModifier extends Container{

protected TileEntity tileEntity;

public ContainerArmorModifier(InventoryPlayer invPlayer, TileEntityArmorModifier te) {

	tileEntity = te;


}

}

 

An there is my Error

 

public class GuiArmorModifier extends GuiContainer{

public GuiArmorModifier(InventoryPlayer inventory, TileEntityArmorModifier tileEntity) {
	super(new ContainerArmorModifier(inventory, tileEntity)); //this doesn't work here, I get an error here, But I cant understand why
}

@Override
protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {

}

}

would u mind to tell us ur error?

 

EDIT: You should be switiching by the id given in the GuiHandler, its better style :b