jester620

Thanks for your replies, but this is not the issue that I am having. The extensions are associated with only ArcGIS 9.2 only. I do not have another program on the computer that would have been uninstalled/installed that could associate itself to these extensions. Thus stealing the association from ArcGIS 9.2. Please could someone help?

Whiteshark, Thanks for taking on this problem... I re-created your test on my machine and CCleaner does identify .x1x as an unused extension.

Hey guys, I've been using CCleaner for about 5 months now with limited problems. I've noticed something recently that I was wondering if you guys could help me understand/fix. When I do an "Issues" Scan, it cites multiple file extensions & help files for a very important program on my machine as being unused etc. I made the mistake a month ago to just clean without take note of the "problems" it found which caused the specific program to crash. Any ideas why CCleaner would do that?!