> > IIRC that was against the rules about frontends for mame > > Well, whatever's doing that, it's not MAME. (Might be ClrMAMEPro or ROMCenter or some > really annoying frontend, but it's not MAME).
it might be -verifyroms *, the heuristic for only telling you about bad sets if you actually have the set is not always 100% accurate.
An automated test would be good for that, it would have to run a -verifyroms * after setting up a roms directory with each game in turn.