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None of my add ons are showing. Firefox 18.0.2, Ubuntu 12.10. Recent issue.

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New Contributor

None of my add ons are showing. Firefox 18.0.2, Ubuntu 12.10. Recent issue.

All sympthoms are similar to question at http://support.mozilla.org/en-US/questions/949490

The version 18.0.1 was fine, no any problems. Problems have started since I updated Firefox to version 18.0.2, before it was no issues with extension compatibility. Everything works except add-ons. I cannot install and/or update add-ons as well. I cannot open the page at https://addons.mozilla.org/ The page gives a message: "The connection has timed out".

Add-ons bar at the bottom of the screen seems to be working, but none of my extensions are showing next to the navigation bar. I run Firefox on the Linux Ubuntu 12.10 (32-bit), as well, and no issues.

3 REPLIES
Site Moderator

Re: None of my add ons are showing. Firefox 18.0.2, Ubuntu 12.10. Recent issue.

It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to check if there is a compatibility update available.

If this hasn't helped then also try to delete the addons.sqlite file.


Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

New Contributor

Re: None of my add ons are showing. Firefox 18.0.2, Ubuntu 12.10. Recent issue.

All of my add-ons have uninstalled. I've tried to re-install but they don't show up. Most of these didn't need restart to install. But some of my restart install disappeared too. I don't have much practical knowledge of computers. I understand that sum support for window has been withdrawn would that have anything to do with this?

Site Moderator

Re: None of my add ons are showing. Firefox 18.0.2, Ubuntu 12.10. Recent issue.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder

Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry.