What is this jar:file

What is this jar:file and is it coming up all of a sudden. Never saw this before installing CIS.

File Not Found

Firefox can’t find the file at jar:file:///C:/Program Files/Mozilla Firefox/chrome/en-US.jar!/locale/browser-region/region.propertiesforums.comodo.com.

* Could the item have been renamed, removed, or relocated?
* Is there a spelling, capitalization, or other typographical error in the address?
* Do you have sufficient access permissions to the requested item?


Problem, as discussed on FireFox forum, seems to be the Ask.com toolbar that gets installed with CIS. If you disable or uninstall that from FF, the problem goes away. The FF forum: Jar:File not found error • mozillaZine Forums