> Clrmame 3.61b hung when I had corrupt zip files in my add directory and clrmame
> was trying to use those corrupt files to fix my roms.


Well..this is a known issue by the zlib library. Even winzip /rar crashes if you perform add/removes from such a corrupt zipfilee. For this reason you should enable settings->zipsettings->full zipstructure scan. This will slowdown scanning, but will find more zipstructure problems and will skip the archive if necessary.

Roman Scherzer
ClrMamePro