That's a good catch (I had checked it before thinking I had named it Panasonic or something but didn't catch the O vs 0). I was hoping it'd be the root cause, still doesn't seem to want to load though.
Oddly enough, I just installed the standalone 4DO emulator, added to Launchbox and it seems to work fine. Double-checking the core information in RA and it does show the panafz10 bios is present. So I'm really just lost on what the issue is.
It's not end of the world, I think I'll get by without 3DO in RA via LB, but it's odd that I can't get this one to behave when NES,SNES, GB,GBA, MS, MD, Saturn and PSX are all working fine in RA.