Whenever I try to playGUI.add("CM_HUD"); the HUD containing the BitmapButton to the playGUI, it shows up and everything operates as it should except for that button, or any button on my HUD. I try to press them by unlocking my mouse (M) and clicking it, but nothing happens. No animation of pressing the button, nor the command, echo("1"); is executed.
I've seen others do the same thing, working of course. What could I be doing wrong?