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The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

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New User

The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

When click on Firefox -> Add-ons, the new Add-ons Manager opens in a new tab. It shows links to the Get-Add-ons page, Extensions, Appearance, Plugins, and User Scripts (for Greasemonkey) on the left-hand menu. All of these work great except for the Extensions tab, which says I do not have any extensions. However, in the bottom right-hand corner of the window, icons for extensions I have been using with Firefox 3.6 appear as they did in that version of the browser. All of my previous extensions are fully functional. Is there a way I can re-access the menu for disabling/uninstalling/configuring them? Thank you very much to anyone who is willing to help!

1 ACCEPTED SOLUTION

Accepted Solutions
Site Moderator

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

You seem to have been using this profile with quite a few Firefox test version according the the presence of many extensions.checkCompatibility.* prefs in your More system details list.

Maybe you should create a new profile as a test to check if your current profile is causing the problems.

See:

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)

See:

11 REPLIES
Support Forum Moderator

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

This can be caused if one of the files that stores details of installed extensions is corrupt.

  1. Open your profile folder, for details of how to find it see https://support.mozilla.com/kb/Profiles
  2. Close Firefox
  3. Delete the following files if they exist, extensions.cache, extensions.rdf, extensions.ini and extensions.sqlite
  4. Re-start Firefox, it will then rebuild the list on installed extensions
New User

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

Hi TonyE,

Thank you very much for taking a look at my problem. I appreciate it! The steps you posted look good to me. However, I got the same result. My profile folder was located in C:\Users\(_myusername_)\AppData\Roaming\Mozilla\Firefox\Profiles\sg3nxpk4.default . The files you listed were all there, as well as one additional one called extensions.log, which I tried deleting as well after trying the first 4. Everything was as you described; Firefox did recreate the files, but the Add-ons Manager continues to come up blank.

thanks again,

-fishtacos123

New User

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

TonyE,

EDIT: All of my extensions (in the browser) are gone. So something worked!

-fishtacos123

Site Moderator

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

You seem to have been using this profile with quite a few Firefox test version according the the presence of many extensions.checkCompatibility.* prefs in your More system details list.

Maybe you should create a new profile as a test to check if your current profile is causing the problems.

See:

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)

See:

New User

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

Hey cor-el,

The very first step of creating a new profile was to back up the current one. Well, guess what? The current profile folder refused to copy. By copying the internal files that would actually cooperate, one file was left...and it was corrupted. Now all of my extensions are back, and they are visible in the all-too-cool Add-ons Manager!

Thank you so much,

fishtacos123

Site Moderator

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

You're welcome

Which file was causing the problem?

New User

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

how do I create a new profile ?? where are the profiles stored in the program ?? when I bring up the addons manager in a new tab...there is no extensions listed..but they are all working..help please...I also read something about deleting 3 files in my profile to fix the problem..what 3 files and where do I go to do this ??where is my profile stored ??

Site Moderator

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

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

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

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.

New User

Re: The new firefox 4 add-on manager does not show any of my extensions, yet they are all still installed and functioning.

I found the profile but within that folder under the name extensions..this is what I found extensions(config files) extensions(text doc) extensions.rdf extensions.sqlite extensions.sqlite-journal and then of course there is the entire file of extentions... but there was just one of the files that you mentioned to me(extensions.sqlite, extensions.ini, extensions.cache)