I've registered my Event Handler and it does print "#!#" as expected but the button just isn't there.

Here's my event class:

public class EventHandler {

	@SubscribeEvent
	public void onGuiInit(InitGuiEvent.Pre event) {
		if(event.getGui() instanceof GuiIngameMenu) { // Make sure GUI is Escape menu
			System.out.println("#!#");
			GuiButton button = new GuiButton(43, Minecraft.getMinecraft().displayWidth / 4, Minecraft.getMinecraft().displayHeight / 4, "Music");
			event.getButtonList().add(button);
		}
	}
	
	@SubscribeEvent
	public void onGuiActionPerformed(ActionPerformedEvent event) {
		if(event.getGui() instanceof GuiIngameMenu && event.getButton().id == 43) { //Confirm my button was pressed
			//Open new GUI here
		}
	}

}

Yet when I open it up and hit esc, it prints #!# but fails to show any button in existence.

 

What happens when you use GuiButtonExt instead of GuiButton?

Just now, Kokkie said:

What happens when you use GuiButtonExt instead of GuiButton?

same thing, i tried GuiButtonExt.