I used Mame Mapping Magician to setup a few roms to open in an older version of Mame. I noticed that some roms now work on Mame .172, so I wanted to undo some of the changes I previously made.
When I go to open the program, I get this error:
I saw a post a couple years ago with an updated version to fix this issue, but I tried that and it didn't work. Anyone have this problem or similar problems?
Thanks!