immortalPhoenix

I know this is an old thread but I'm having the same issue when trying to import a mame romset for use with the libretro mame-2003-plus core (using the generic rom import and not the mame full set import wizard). Many of my capcom fighting games (super street fighter 2 turbo, marvel vs. capcom, x-men vs. street fighter) were not working and while troubleshooting I checked the file they were trying to boot and it was the Hispanic version. I changed to the USA rev 1 version and they all work now.