This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I deleted some apps in Firefox 4, opened 3.6, closed it, and opened 4 again. But now Firefox 4 is having some severe problems.

  • 2 replies
  • 3 have this problem
  • 5 views
  • Last reply by DaveRo

AnonymousUser
AnonymousUser
more options

After doing what I described in the thread title, Firefox 4 presented the following issues: 1- Tabs would not close. 2- The "forward" and "back" button would not be lit or clickable, as if I didn't visit any websites. Although pages did load, I could not go back and forth between them via these buttons. 3- the "feedback" button in the right-hand side of the screen was completely gone. Trying to download the respective feedback app that Mozilla provides didn't work, it wouldn't download. 4- the App Management screen would not open. 5- I did not save any of the pages from the previous session. So I closed FF 4 and opened 3.6 once again (wich appears to be functioning normally) and the pages came back

So basically my FF 4 got completely messed up. Reinstalling it did nothing. Cleaning the registry with Registry Mechanic was to no avail either. I had to uninstall FF4 since it was unusable.

Possibly useful fact: The apps I had removed in FF 4 were also removed in 3.6, wich indicates that maybe the FF 4 installation did not create copies of it's own for the bookmarks, apps, cache etc, so I am afraid to delete those when the FF 4 uninstallation wizard prompts me to, as it would also probably delete the stuff I have in 3.6 .

This happened

Every time Firefox opened

== Started after using Firefox 3.6 then switching to 4 again.

After doing what I described in the thread title, Firefox 4 presented the following issues: 1- Tabs would not close. 2- The "forward" and "back" button would not be lit or clickable, as if I didn't visit any websites. Although pages did load, I could not go back and forth between them via these buttons. 3- the "feedback" button in the right-hand side of the screen was completely gone. Trying to download the respective feedback app that Mozilla provides didn't work, it wouldn't download. 4- the App Management screen would not open. 5- I did not save any of the pages from the previous session. So I closed FF 4 and opened 3.6 once again (wich appears to be functioning normally) and the pages came back So basically my FF 4 got completely messed up. Reinstalling it did nothing. Cleaning the registry with Registry Mechanic was to no avail either. I had to uninstall FF4 since it was unusable. Possibly useful fact: The apps I had removed in FF 4 were also removed in 3.6, wich indicates that maybe the FF 4 installation did not create copies of it's own for the bookmarks, apps, cache etc, so I am afraid to delete those when the FF 4 uninstallation wizard prompts me to, as it would also probably delete the stuff I have in 3.6 . == This happened == Every time Firefox opened == Started after using Firefox 3.6 then switching to 4 again.

All Replies (2)

DaveRo
DaveRo
more options

I assume by apps you mean add-ons or extensions or plugins. These are held in the profile.

Unless you set up a new profile, then FF4 and FF3 would be using the same one.

http://kb.mozillazine.org/Profile_folder_-_Firefox

When I test a beta I always use a new profile, or update one from a previous version, but I would never expect the profile to be usable again in a previous version of Firefox.

Since FF4 has a new add-on manager it doesn't surprise me that FF 3 won't work with a profile that's been modified in FF 4.

AnonymousUser
AnonymousUser Question owner
more options

"Since FF4 has a new add-on manager it doesn't surprise me that FF 3 won't work with a profile that's been modified in FF 4. "

Thanks for the answer.

As I have stated in item 5 of my post, FF 3 is functioning normally, it's FF 4 that's not working right anymore and presenting all the issues listed.