Joystick assignments for something as trivial as APU operation? You must have a ton of extra buttons! Dunno about the problem with the buttons, but I can tell you about the 3D operation. To turn the APU off in 3D mode you have to click the on/off switch with the right mouse button. Lots of stuff in CS products are controlled by Left mouse button = knob left/on/up. Right mouse button = knob right/off/down.