Updated to MAME/QMC .183 and it seems something has changed.
My keyboard's arrow keys and the control key used to work as joystick/button #1, but no longer does. I've poked around the options but don't see anything that's obviously changed, and everything looks set right. The rest of the keyboard works fine. Tried using an actual game controller (the "joystick" options are on) but that gave no response, either.
Crushing, since we had a post on favorite games and I'm wanting some game time in between school assignments.