I just got the game recently, and I've run into a problem. After I beat Voltage Village, it briefly flashes the name of the next level then...quits. It doesn't give any notice about why it quit or anything, it just spontaneously quits. I have the Macintosh version, for the record...anyone have any idea on why that's happening, and how to fix it?

EDIT: Forget it; I figured it out. I rebooted my computer under Mac OS 9 instead of X and it worked.