Are you sure it's not a problem with your controller?
Are you sure the "action" funtion was recoreded correctly, or that the software isn't bugged up? (I've had awful, awful experiences with those damn controlers. Buttons sticking, buttons not responding, analogue sticks not responding correctly.. ARG!)
Try playing on the keyboard. if you get the same problem hitting "enter" on the numpad, then you know it's the game. Otherwise, its your controller.