Well, GameEx will minimize if something else takes focus. It can either be a dialog, a program, alt-tab (or another hot key combination like alt-space, alt-escape, alt-enter, etc...), or any number of other things. The thing to figure out is what's stealing focus. If it's not sticky keys, then you could try killing all non-necessary processes with the task manager. It shouldn't still do it if it's another program. If it does, it must be a key combo. Try hitting different combinations until you narrow it down. Then, figure out what the button is sending. I don't know the Ipac since I don't have one, but you could upload your .ipc file to let people who do know it check it out.