Hello!
Plain mame core seems to be crashing some moments after loading the game, any ideas? For instance I load Captain Commando and I see the game working for like 10 seconds and then windows app crashes.
problem in mame 0.214 libretro core. core 0.212 works normal.
same problem with killer instinct for example… also retroarch doesn’t add mame roms to playlist after scan… 
Current MAME core is broken at the moment. You have to revert back to the previous one (0.212).