I accidently left an old MAMEPP.exe file sitting in the C:\CMP folder alongside CMP. I tried to create a new profile pointing to G:\MAME\MAMEPP.exe. Whenever I loaded the profile, it would execute the MAMEPP sitting at C:\CMP *even though* it said it was pathing out to G:\MAME\MAMEPP.exe. This stumped me for a long time trying to figure out why it kept loading and older version of the game list. So it must not be applying the drive/path info if it finds a local copy alongside the exe.