I'm running advmame .62 with .62 roms and mamewah in windows98--whenerver i run metal slug 2 or 3 (but #1 works) i get a unable to start video emulation error. I checked the advmame forums and they say its cause advmame can't create the resolution but MS #1 is the same as the others so that can't be the issue--i even went into advmame and told it to use the working resolution for all similar games (304x224) but to no avail.
I realize this is a shot in the dark--but does anyone have any suggestions?