Java Script application Error
Error message [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIStringBundle.GetStringFromName]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: XStringBundle :: getString :: line 17" data: no].
Moambuepyre
Opaite Mbohovái (1)
I think it might make sense to reinstall Firefox over itself to resolve any problems with the program files. This shouldn't affect your personal settings, but just in case, you should back up your profile.
To back up Firefox, see Backing up your information.
If you want to try something else first, you could use Firefox's Safe Mode to see whether disabling add-ons has any effect.Safe Mode. Be careful not to "reset" anything permanently if you didn't back up.