I have extensions and use them every day, but when I look using tools>add-ons>extensions there is nothing there. If I click on appearance or add-ons I see something, but extensions just gives a blank screen. Oh, get add-ons simply says 'loading'.
I know my extensions are there, but why can't I see them? I used to be able to. I use XP and FireFox 17 (I think).
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Do you have that problem when running in the Firefox SafeMode?
Don't select anything right now, just use "Continue in SafeMode."
When in Safe Mode...
- The status of plug-ins is not affected.
- Custom preferences are not affected.
- All extensions are disabled.
- The default theme is used, without a persona.
- userChrome.css and userContent.css are ignored.
- The default toolbar layout is used.
- Hardware acceleration is disabled.
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.
This all seems rather complicated. I was going to try something when I read that all my open tabs would be deleted so nothing has been done yet.
Good news: I noticed that all my plug ins and extensions are visible when using Thunderbird :/