I've run into something I've not encountered before in MAME. I went into Dipswitches to add lives to Galaga. I reset the game and after it ran the reboot of the roms the screen is now flipped upside down. It says "rom ok" on the screen but if I insert coins the game doesn't play anymore. It's not like it will even run upside-down. When I set the lives back to 3 and reset it stayed the same. Changing the rotate options in Video Options doen't help either.
Is this a common problem with this game or is there something I've accidentally switched on? Do I just need to track down a config or setup file and trash and restart the game?