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Why can I not see my extensions?

Posted

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).

Additional System Details

Installed Plug-ins

  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 11.5 r502
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.01
  • GEPlugin
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • np-mswmp
  • Nokia Suite Enabler Plugin
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
  • Google Update
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.7.637
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.6.636
  • MapsGalaxy Installer Plugin Stub for 32-bit Windows
  • Yahoo Application State Plugin version 1.0.0.7
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.5.635
  • 5.1.10411.0
  • DivX Plus Web Player version 2.2.0.52
  • DivX VOD Helper Plug-in
  • 1.9.0042.0
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • DRM Netscape Network Object
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • Windows Multimedia Services DRM Store Plug-In
  • Intel Indeo® video 5.1 PD Plug-In

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

the-edmeister
  • Top 10 Contributor
  • Moderator
3197 solutions 24405 answers

Do you have that problem when running in the Firefox SafeMode?
http://support.mozilla.com/en-US/kb/Safe+Mode
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.
  • The JIT Javascript compiler is disabled.
  • Hardware acceleration is disabled.

If not, see this:
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+theme...

cor-el
  • Top 10 Contributor
  • Moderator
10762 solutions 96861 answers

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.

Question owner

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 :/