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I just updated to 4.0.1 and I get the "We're sorry. Firefox had a problem and crashed. We will try to open your tabs/windows when Firefox restarts" However, it just keeps popping back up, firefox never restarts!!!

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This morning I had a popup on my Windows XP PC stating that the 4.0.1 update was available. I upgraded. now, i receive the following error: We're sorry. Firefox had a problem and crashed. We will try to open your tabs/windows when Firefox restarts. You can submit crash report data, blah blah blah (which i have submitted several)

But, firefox DOES NOT ever open. It just pops back up with that same report window, over and over.

This morning I had a popup on my Windows XP PC stating that the 4.0.1 update was available. I upgraded. now, i receive the following error: We're sorry. Firefox had a problem and crashed. We will try to open your tabs/windows when Firefox restarts. You can submit crash report data, blah blah blah (which i have submitted several) But, firefox DOES NOT ever open. It just pops back up with that same report window, over and over.

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It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Profile Folder

Delete sessionstore.js and sessionstore.bak in the Profile Folder

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.

Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).

See: