This problem started a while ago, and it's taken a while for me to swallow my pride and come to this forum for answers. Originally, the emulator was refusing to run games that I was able to run before, despite me not having changed versions for either the emulator or the roms at that time. Since then, I've updated MAME twice, the second of which was just a few days ago, and downloaded replacements for the ROMs that didn't work from this site. This seems to have worked for most of them, but there are still exceptions, the biggest example of which seems to be CPS2 games. Are some of the ROMs in this site's MAME section outdated, or am I doing something wrong here?