have you tried the other mame4all emulator? there are two:
mame4all-pi
lr-imame4all
they both use the same romset so you should be able to swap the default to whatever one you’re not using. might be worth a shot! :)
failing that, you should be able to see any error messages in /tmp/runcommand.log after a crash – this might give a clue as to the problem.
