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.
Opaite Mbohovái (3)
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":
- http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
- https://support.mozilla.org/kb/Unable+to+install+add-ons
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":
- https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
- http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
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.
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 I understand that sum support for window has been withdrawn would that have anything to do with this?
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.