User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2 When updating Firefox through the automatic updater but pressing Cancel at the last (?) step Firefox will not handle this situation correctly. Sadly I did not make any screenshots. This maked firefox unable to start (ever - for me at least) when closed. A reinstall was needed... This is why I label this bug as critical - even though I think I'm the only one affected because people just don't press Cancel there!!! Reproducible: Always Steps to Reproduce: 1. I pressed the updater icon 2. I pressed install. 3. I went through 3-4 steps (can't remember how many, sorry) but I do know I pressed Cancel at one point. As far as I can rememer it was when the last quastion "Should I install this" or something like that popped up... 4. I still wanted the update, but the update icon was missing, so I restarted firefox (tried to)... Actual Results: Result: firefox tells me that "??? is still running and I need to close the application for the update to finish" or something like that, again I'm sorry I wasn't paying attention... Note that no error was reported, so this is all I can give you guys... Dirty fix: Download the entire installer and re-install everything... Well, I think that I'm the only one stupid enough to press cancel at that stage, so this is probably a bug that you'll only see once... BUT on the other hand it rendered firefox unusuable... Expected Results: It should have started up as normal.... or something... not hanging
I've seen the same behavior. To get Firefox working again, delete the "xpicleanup.dat" file in your program directory.
See bug 283680 comment 14. *** This bug has been marked as a duplicate of 283680 ***