Try this: In the left column of the Add-ons page/tab, click on any item other than "Get Add-ons". Doing that one time should resolve the problem. I thought that problem was fixed, but maybe not.

If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

As I said, I've done that. It does nothing.

Sorry, I did not see/read that part.

The files that store information about your installed extensions may have become corrupted. Try the reset of those files discussed in the following.

• http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Corrupt_extension_files

If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Not related to your question, but...

You may need to update some plug-ins. Check your plug-ins and update as necessary:

• Plug-in check (edited): http://www.mozilla.com/en-US/plugincheck/ OR https://www-trunk.stage.mozilla.com/en-US/plugincheck/
• Adobe Shockwave for Director Netscape plug-in: Installing (or Updating) the Shockwave plugin with Firefox
• Adobe PDF Plug-In For Firefox and Netscape: Installing/Updating Adobe Reader in Firefox
• Shockwave Flash (Adobe Flash or Flash): Updating Flash in Firefox
• Next Generation Java Plug-in for Mozilla browsers: Installing or Updating Java in Firefox

Since that page is part of Firefox, I would suspect the localstore file in the profile of being damaged.

• http://kb.mozillazine.org/Corrupt_localstore.rdf

If that does not fix it, try basic troubleshooting.

• https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting

well, the plugin check page gave me this:

Plugin Finding Service Error We've encountered an error. Please try your request again later.

Try this Plugin Check page: http://www.mozilla.com/en-US/plugincheck/

Thanks SafeBrowser. Trying that now.

Have you resolved the about:addons problem?

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• click on "Solved It" next to the reply ABOVE that BEST solved your question
• DO NOT click "Solved It" next to this reply

Thanks

Almost I think. I needed some extension updates. Still working.

Okay. Extensions updated. I also tried deleting the extensions files as suggested.

about:addons still not loading. neither is klout.com nor google+

Try to reset the preferences.

• http://kb.mozillazine.org/Resetting_preferences
• https://support.mozilla.com/kb/Resetting+preferences

Make sure that you click the Extension tab on the Tools > Add-ons page.
You may need to wait a few seconds to get a response and have the extensions show up.

as i said in the other thread ([https://support.mozilla.com/en-US/que.../892637#answer-270018|here] here), i've already done all that. i did all that before i did anything else.

Do you have a problem with accessing other Google pages?

Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

• http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
• http://www.superantispyware.com/ - SuperAntispyware
• http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
• http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
• http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

i've ran spyware. i've checked for malware. i've booted and rebooted. i've uninstalled and reinstalled. i can't get to google+ or to klout.com. the browser won't load twitter's new "t.co" shortlinks. everything else seems to work just fine.

as far as the "Make sure that you click the Extension tab on the Tools > Add-ons page." that's part of the problem. i can't get "about:addons" to load. i said that in the very first message and throughout.

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

See "Basic Troubleshooting: Make a new profile":

• https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile

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, but be careful not to copy corrupted files.

See:

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

okay that's one thing i've not tried. i'll do that in a bit. thank you.

okay. when i shut firefox down to do all of this ... i never got through any of it. when i opened it back up to check something, or tried to open it back up to check something, i got a "firefox is already running" dialog. i checked my processes and services to turn it off - and couldn't find firefox or mozilla anything in either place. so i uninstalled the program and reinstalled it and rebooted - twice - and i'm still getting the "already running" dialog. i can't do anything with the program at all now.