After updating to Firefox 6, Tools/Add-ons hangs "Loading..."

After updating, Firefox informed me that Flash Player was out of date. I updated that and restarted Firefox with no issues.
However, every time I try to open the Add-ons manager it just hangs with a small "Loading..." bubble.

Apparently clicking on any (Extensions, Plugins, Appearance) just the one time solves the problem. No further problem after exiting and restarting Firefox 6 for me. I have reported the issue.

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After updating to Firefox 8.01 all my add-ons are disabled & I have to manually reinstall those that still work after each reboot??

After updating to Firefox 8.0 & 8.01 all my add-ons were disabled.
I have to reinstall those that still can be enabled manually after each reboot. These, that I can reinstall, are:
Download Helper 4.9.7/WOT 20111107/Adblock 1.3.10/DivX plus Web Player HTML5 2.1.2.145/
All my other add-ons are incompatible with this version of Firefox! This includes Ghostery which I particularly miss,
This is annoying!

Ghostery: Works with Firefox 3.5 - 11.0a1: https://addons.mozilla.org/en-US/firefox/addon/ghostery/
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.
*https://support.mozilla.com/kb/Profiles
New files will be created when required.
See "Corrupt extension files":
*http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
*https://support.mozilla.com/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 do a compatibility check or see if there is a compatibility update available.
See also:
*http://kb.mozillazine.org/Preferences_not_saved
*https://support.mozilla.com/kb/Preferences+are+not+saved

After updating to Firefox 4, I have lost 4 plugins/add ons due to their NOT being compatible. I can no longer play my bejewelled game. Please help me here. Can I get Firefx 3.6 back? Will that help me?

Firefox 3.6 allowed me to play games, Firefox 4 upgrade doesn't.Question
After updating to Firefox 4, I have lost 4 plugins/add ons due to their NOT being compatible. I can no longer play my bejewelled game. Please help me here. Can I get Firefx 3.6 back? Will that help me?

http://support.mozilla.com/en-US/kb/Installing+a+previous+version+of+Firefox
http://www.mozilla.com/en-US/firefox/all-older.html

How do I remove the bookmark toolbar icons for websites? After updating to Firefox 22, add-ons don't help.

In the Bookmark Toolbar, the icons for websites take up too much space and are distracting. I used to use the Bookmarks - Deiconizer add-on but after updating to Firefox 22 it doesn't work anymore.
I tried adjusting the userChrome.css as in other posts but that does not work.
Please help!

Hi haweyext,
Did you see this thread from yesterday:
[https://support.mozilla.org/en-US/questions/964732 How do I keep the icons out of my Bookmarks Toolbar (tried Bookmarks Deiconizer) even after downloading files?]
If userChrome.css isn't working (note: you need to exit and restart Firefox before it takes effect), you can apply that rule to Firefox using the Stylish extension instead.
Does any of that help?

Firefox 5 hangs after new install at Checking the Add Ons and will not start even after reboot

Downloaded V5, ran the install, started Firefox and first screen is 'Checking Add Ons', the status bar is shown and immediately hangs. Have tried to restart, have rebooted and start and Firefox will not come up. Have to drop back to V3.6

Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
* Don't make any changes on the Safe mode start window.
* https://support.mozilla.com/kb/Safe+Mode
This can be a problem with the file(s) that store the extensions registry.
Delete the files extensions.* (extensions.sqlite, extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox [[Profiles|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
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 do a compatibility check or see if there is an update.

I keep getting this message whenever I click on the "Find Updates" tab in Tools/Add-ons: "Plugin Finding Service Error. We've encountered an error. Please try your request again later. Retry."

I have updated Firefox to 3.6.16, and Flash Player to the new 10.2.153.1, and all the other "extensions" and "add-ons" work just fine. I can't figure out what the problem is except to say that, I have not been able to "update" the "plugins" in Firefox.
Every day I have been trying to see if there is any change, but each time the message box reads the same: "Plugin Finding Service Error...." etc, as stated in the "Question" above.

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"
You can check the permissions for all sites on the about:permissions page, via the location bar.
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Firefox locks up then crashes when I open the Tools-Add Ons page

Hi - Just updated today with automatic 6.0.1 update and once I did, Firefox killed Adobe Reader. I fixed that but then found that opening the Tools, Add-Ons page locks up Firefox for a few minutes, then crashes it.

Hello Ted.
Although possibly not related to your problem, I will remind you that the version of Firefox you are using at the moment has been discontinued and is no longer supported. Furthermore, it has known bugs and security problems. I urge you to update to the latest version of Firefox, for maximum stability, performance, security and usability. You can get it for free, as always, at [http://www.getfirefox.com getfirefox.com].
As for your problem, you may be having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?
Whenever you have a problem with Firefox, whatever it is, you should make sure it's not coming from one of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in [http://support.mozilla.com/en-US/kb/Safe+Mode safe mode] and select ''Disable all add-ons''. If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes this article] for information about troubleshooting extensions and theme. You can troubleshoot plugins the same way.
If you want support for one of your add-ons, you'll need to contact its author.

None of my addons or extentions work any more since installing 3.6.6. When I go Tools/Add-ons it just goes 'ding' [makes an error noise] when I click on any oth the options and then firefox freezes up.

None of my addons or extentions work any more since installing 3.6.6. When I go Tools/Add-ons it just goes 'ding' [makes an error noise] when I click on any of the options and then firefox freezes up and I have to go to the task manager to shut firefox down.
== This happened ==
Every time Firefox opened
== when i updated to 3.6.6

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox [[Profiles|profile folder]] to reset the extensions registry.
See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

I can't get firefox (Linux) to use flashplayer. I've installed a dozen times but it doesn't show up in tools/add-ons.

I've tried installing flash player a dozen times, with both the instructions on the adobe page and the mozilla page. I'm running Fedora Core 11 with Mozilla 3.5.9. I've gotten "libflashplayer.so" and copied it to every "mozilla/plugins" directory on the drive. It does not work and is not listed when I bring up "tools/add-ons." One instruction said to copy "flashplayer.xpt" to the "mozilla/commponents" directory, but the download included no such file and I have no such directory. (Probably pertains to an older version.) I've tried downloading it with the .tar, .gzip, and yum; all with the same result. It doesn't work online and doesn't show up in my plug-ins.
== This happened ==
Every time Firefox opened
== Only time I've tried to install it.

I had a problem with Fedora 15-64bit + Firefox 64bit + flash player plugins. I finally found that the plugins must be put in: /usr/lib64/mozilla/plugins.
I downloaded the 64-bit version of the flash plugins at : http://labs.adobe.com/downloads/flashplayer10_square.html Decompressed it and move the file libflashplayer.so to /usr/lib64/mozilla/plugins (you need to be super user to do that). Restarted Firefox and it worked ! My guess is that if you use 32-bit plugins then you must put them in /usr/lib64/mozilla/plugins-wrapped but I didn't try.
Arg ! It took me the whole evening to find that !

After updating to Firefox 5 my Realplayer Recorder is not working due to that add on not being compatible. How do I get this to work again?

After updating to Firefox 5 my Realplayer Recorder is not working due to that add on not being compatible. How do I get this to work again?

Blue
It sounds like you restored from an old back-up. Did you back-up just before your software update? It will use your last one and if your last back-up was a ywear old then it will use that one.
In general, if you are getting these messages on your iPhones select logout (when you get that Apple Id request) and then log back in with your newer ID.
Sorry for your losses.
Cheers

I have removed the old Java Updates (17/19/21) from my Program and Features list(Win7). They still appear in the Tools Add-ons Extensions list. How do I remove them?

I have removed the old Java Updates (17/19/21) from my Program and Features list(Win7). They still appear in the Tools>Add-ons>Extensions list. How do I remove them?
In both SAFE and Regular browser windows, the UNINSTALL button is grayed out.
I have tried in SAFE MODE, as well as the Help>troubleshooting Information>Application Basics>Profile Directory>Open Containing Folder,,,(looked, nothing there),,,,in both SAFE and Regular browser windows.

You can uninstall (remove) the Java Console extensions, you do not need them to run Java applets.
See http://kb.mozillazine.org/Java#Multiple_Java_Console_extensions
Your above posted system details show outdated plugin(s) with known security and stability risks that you should update.
*Shockwave Flash 10.1 r85
Update the [[Managing the Flash plugin|Flash]] plugin to the latest version.
*http://www.adobe.com/software/flash/about/

I am trying to set my Persona back to the Firefox default. I have followed the instructions and have gone to Tools-Add Ons-Themes but there is no selection for Default for Firefox. I've spent over an hour on this. Please help. Thanks!

I want to remove the Persona I selected and return to the Firefox default. I have outlined the issue above. I have followed the instructions in the FAQ's. There is no selection for Default for Firefox.

Do you see that persona on the Firefox/Tools > Add-ons > Appearance/Themes page?
Does that persona have an uninstall button?
If that doesn't help the reset the lightweightThemes on the about:config page
lightweightThemes.isThemeSelected -> false
lightweightThemes.usedThemes -> (empty string)
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page. 
You can use the Filter bar at to top of the about:config page to locate a pref more easily.

Cannot re enable the add ons after the new 13.0.1 update ,it shows no update available and all the add-ons are disabled

cannot re enable the add ons after the new 13.0.1 update ,it shows no update available and all the add-ons are disabled

I have the same problem. One minute everything was okay, the next minute all my addons were disabled.
Adobe Acrobat 10.1.3.23
AVG Site Safety Plugin 11.1.0.4
Google Update 1.3.21.115
Java Deployment Toolkit 7.0.50.255 10.5.1.255
Java Platform SE 7 U5 10.5.1.255
Shockwave Flash 11.3.300.265
VLC Web Plugin 2.0.2.0
Windows Presentation Foundation 3.5.30739.1
I can reenable them but FF will disable them on the next startup. I uninstalled version 13 and installed version 12. Problem gone! So I'm still using version 12 and am afraid to update to version 13.
This problem began when I was trying to research and fix a problem (no history all-of-a-sudden) so it probably was something I caused. Can't recall everything I did though.
So: Does the addon problem I described have a solution? If so, I'll update my version 12 to version 13. Please respond.....

After Firefox 6 upgrade, Add-ons Manager does not load, it just says "loading" forever

nothing to add

Thanks for the suggestions. When you click on Tools and then Add-ons, theAdd-on Manager launches, and by default "Get Add Ons" is selected. Although I was not getting any response other than "Loading", if I then click on Extensions or Appearance or Plugins, I was getting a proper response from those three. After doing that and closing out Add-ons Manager and then relaunching it, my original problem disappeared. Now everything works fine. I tested it multiple times and is still OK. Can't explain it but OK for now. Maybe the Get Add-ons portion of the Web site was down at the times I was testing it? I'll keep a watch on it. Thanks for your speedy reply.

When I go to Tools Add-ons, nothings shows under Add-ons, Extensions, etc.

The only clickable item there is "check for updates." My add-ons are all working, but none show up. Same for Extensions, Appearance, Plugins, Services.
I don't know how long it's been this way, because I've had no need to check until last Friday, when I picked up some malware that slides open a tab from the right-hand side of my screen with "Hot Deals" on it.
Firefox's "Automatically add" option tells me that listed below are my add-ons (though I can't see them in my own Add-ons tab). There are several there I don't recognize at all, but I have no idea how I can remove them without that page properly loading.
Using Firefox 25.0.1 with Windows 7
* Google Update
* Shockwave Flash 12.0 r0
* The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
* iTunes Detector Plug-in
* 5.1.30214.0
* Picasa plugin
* NPRuntime Script Plug-in Library for Java(TM) Deploy
* Shockwave Flash 11.9 r900
* GEPlugin
* RealPlayer(tm) LiveConnect-Enabled Plug-In
* RealPlayer Download Plugin
* RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
* RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
* RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
* RealDownloader Plugin
* Adobe PDF Plug-In For Firefox and Netscape "9.5.5"
* Nitro PDF plugin for Firefox and Chrome
* NVIDIA 3D Vision plugin for Mozilla browsers
* NVIDIA 3D Vision Streaming plugin for Mozilla browsers
* Amazon MP3 Downloader Plugin 1.0.17
* WildTangent Games App V2 Presence Detector
* Logitech Device Detection
* RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
* RealPlayer(tm) HTML5VideoShim Plug-In
* NPWLPG
* Windows Activation Technologies Plugin for Mozilla
Thanks for any help you can offer.

If it works in Safe Mode and in normal mode with all extensions (Firefox/Tools > Add-ons > Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.
Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit)
*If you have many extensions then first enable half of the extensions to test which half has the problem.
*Continue to divide the bad half that still has the issue until you find which one is causing it.

After updating to Firefox 6, Tools/Add-ons hangs "Loading..."

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