Some add-ons icons vanished and firefox is unstable

some of my add-ons icions are vanished and i can`t use those add-ons. along with issue i want to tell that firefox in loading to hard and is unstable.

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.

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Third party add ons harassing safari and firefox

third party add ons harassing safari and firefox both, tried turning off cookies add ons etc etc, removing all the files from library/script, add ons etc etc nothing works, when I press a link sometimes a blank page pops up with the top sites view and several commercials by the way, here's a screen http://tinypic.com/r/m7rsl0/8
could someone please help!
noah

You installed the "DownLite" trojan, perhaps under a different name. Remove it as follows.
Malware is constantly changing to get around the defenses against it. The instructions in this comment are valid as of now, as far as I know. They won't necessarily be valid in the future. Anyone finding this comment a few days or more after it was posted should look for more recent discussions or start a new one.
Back up all data.
Triple-click anywhere in the line below on this page to select it:
/Library/LaunchAgents/com.vsearch.agent.plist
Right-click or control-click the line and select
          Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item named "VSearch" selected. Drag the selected item to the Trash. You may be prompted for your administrator login password.
Repeat with each of these lines:
/Library/LaunchDaemons/com.vsearch.daemon.plist
/Library/LaunchDaemons/com.vsearch.helper.plist
/Library/LaunchDaemons/Jack.plist
Restart the computer and empty the Trash. Then delete the following items in the same way:
/Library/Application Support/VSearch
/Library/PrivilegedHelperTools/Jack
/System/Library/Frameworks/VSearch.framework
Some of these items may be absent, in which case you'll get a message that the file can't be found. Skip that item and go on to the next one.
From the Safari menu bar, select
          Safari ▹ Preferences... ▹ Extensions
Uninstall any extensions you don't know you need, including any that have the word "Spigot" or "Conduit" in the description. If in doubt, uninstall all extensions. Do the equivalent for the Firefox and Chrome browsers, if you use either of those.
This trojan is distributed on illegal websites that traffic in pirated movies. If you, or anyone else who uses the computer, visit such sites and follow prompts to install software, you can expect much worse to happen in the future.
You may be wondering why you didn't get a warning from Gatekeeper about installing software from an unknown developer, as you should have. The reason is that the DownLite developer has a codesigning certificate issued by Apple, which causes Gatekeeper to give the installer a pass. Apple could revoke the certificate, but as of this writing, has not done so, even though it's aware of the problem. This failure of oversight is inexcusable and has compromised both Gatekeeper and the Developer ID program. You can't rely on Gatekeeper alone to protect you from harmful software.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

Some add-ons are missing in the tools menu and / or modules and navigation bar

I am running Firefox 20 FRENCH (this is maybe important as all of this below does not appear with the EN version...) on MacOSX 10.6.8.
Symptoms :
- Web Developer toolbar not displayed anymore.
- Xmarks add-ons not displayed in the module bar.
- Icons of other add-ons displayed in the navigation bar ONLY after the first firefox opening i.e. just after system restart. If firefox is closed and re-opened, all the add-ons icons are lost.
> All the add-ons are installed in tha add-on menu.
> This behavior only appear with the FRENCH versions of firefox (tried 19.0.2 and 20).
> Installed the 19.0.2 ENGLISH version and all is OK !!!
Fixes attempts (tried almost everything...) :
- Reset firefox profile and restart with a new one : no effect (after I have reinstalled all the add-ons one by one...)
- Uninstall Firefox (with profiles folder, cache folders, etc...) then reinstall : no effect
- The only thing that is working is using the ENGLISH version...
This is really annoying because as a web developer I really need the Web Developer extension.
Does anyone has an idea of how to fix this ?
Thank you very much for your help !
Regards,

Does it have any effect if you change the general.useragent.locale pref to en-US ?

I upgrade my firefox to 3.6.4 but when i add some add-ons they tell me that i have 3.5.8 & i have to upgrade it ... i reinstalle 3.6.4 several time but still the same problem

i upgraded my firefox to 3.6.4 but when i add some add-ons it tell me that i have 3.5.8 & i have to upgrade it ... i reinstall 3.6.4 several times but still the same problem ...
== 2-3 days ago

Look at the highlighted copy of your Help > About Mozilla Firefox image attached below this message.
<u>'''Reset general user-agent'''</u>
-In Firefox, type '''about:config''' in the URL bar and press the Enter key.
-If you see the warning, accept it (promise to be careful).
-Filter = general.useragent.extra.firefox
-Right-click that preference and select Reset
-Then restart Firefox (File > Restart Firefox)

FROZE while checking add-ons for compatibility from firefox 9 to 10... WONT OPEN

i opened firefox 9 and it brought up a tab that was seeing if my old add-ons would work with firefox 10... in the process my window froze so i closed it
ever since then it wont open no matter if i hold shit and start it.... even if i completely reinstall it into a new folder it still wont open
any clue?

You can try to clean install a fresh copy after uninstalling the present version via Windows Control Panel '''Programs and Features'''. While uninstalling make sure to choose deleting the preferences and folders. Please also see [https://support.mozilla.org/en-US/questions/916668#answer-305338 this] regarding problems with security software.
To backup important info which can be restored later, please see [https://support.mozilla.org/en-US/kb/Backing%20up%20your%20information?s=backup&r=1&e=sph&as=s this]. Some of the important files could be '''places.sqlite''' which holds the bookmarks and history, '''key3.db''' + '''signons.sqlite''' which are needed to restore the saved passwords etc.
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
[https://www.mozilla.org/en-US/firefox/new/ Firefox Latest]

Cannot install some add-ons

I am running latest Aurora (8.0a2), though this problem also existed in 7.0a2. I have the Add-On Compatibility Reporter extension installed, so I should be able to install add-ons for older versions of Firefox, and I can.
However, some add-ons do not install. (Three that I have tried are WebRunner, the AdBlock Plus Element Hiding Helper, and Open IT Online.) The little bubble that pops up says that it is downloaded. If I go to about:addons, the status of installation is given as "Verifying," though nothing ever happens. If I restart Aurora and try to install again, I get a message that the add-on is corrupt and could not be installed.
What can I do to fix this?

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
*Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

Some add-ons were disabled because of the incompatibility

some add-ons were disabled,
like :kaspersky URL advisor 9.0.0.463 ,
realplayer browser record plugin 1.1.5,
and Firefox synchronisation extension 7.3.3.42
they are not working because they are incompatible with Firefox 4

Those "programs" need to be updated to work with Firefox 4.0.
For Norton, you might be waiting until May for an update.

How can I add an icon in the firefox toolbar to access to I.E. outlook express?

I'd like to begin using Firefox as my default browser in place of O.E. 7. However, my Google mail account is programmed to feed e-mails to Outlook Express. I can find no way to add an icon to the Firefox toolbar to easily access Outlook Express.

In my limited knowledge there is no way for a user to add an application to this list. You might try one of these two options.
1. Use a utility like Cocktail or Onyx to reset the launch services database. This is the database that decides which applications get launched when a file is double clicked. It may be that the Endnote application didn't get recognized. However OS X decides what applications to add to the list based on files types.
2. The easier solution is to select one of the files you wish to open with Endnote. Right click on the file and select Get Info. Under the "Open with" menu select Other... and navigate to the Endnote application and select it. Now click the Change all button. From now on when you double click your citation file it will automatically open with the Endnote application.

My Firefox crashes when I try to go to Tools Get Add-ons. I don't have any add-ons installed on my Firefox at all. I use Win7 64-bit.

My Firefox 4.0.1 crashes when I try to go to Tools>Get Add-ons. I don't have any add-ons installed on my Firefox, at all. My OS is Win7 64-bit. I've already tried Uninstall-Reinstalling Firefox but it didn't work either.

See:
* http://kb.mozillazine.org/Firefox_crashes
* https://support.mozilla.com/kb/Firefox+crashes

How i can delete a add ons are disabled and have not remove botom ?

how i can delete a add ons are disabled and have not remove botom
http://dl.dropbox.com/u/10490895/screenshot-73.jpg
[http://example.com http://dl.dropbox.com/u/10490895/screenshot-73.jpg]

'''Ctrl+Shift+A''' should also open the Addons Manager.

Some mac app icons disappears and mac App Store didn't open

some mac app icons disappears and mac appstore cant open

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of steps 1 and 2.

Is there a possiblity that the add-ons i find on firefox's website contain viruses(Steal personal information etc)?Are all of them safe?

Is it true that some add-ons might not be safe?

No, they are all inspected for viruses, keyloggers, etc.

I have the newest version of Firefox 15.01 and I wanted to add some add-ons but they won't open up.

I have firefox 15.0.1 and my addons won't load. I wanted to add something new and all it does is keep working like it's busy trying to open or load them but nothing happens. It's been like that for over 4 days. I can't add any new add ons at all. What's going on?? I

Do you mean the Get Add-ons tab on the about:addons (Firefox > Add-ons) page?
If that page isn't working then you can visit the Mozilla Ad-ons site directly.
*https://addons.mozilla.org/firefox/extensions/
* http://kb.mozillazine.org/Installing_extensions
* http://kb.mozillazine.org/Obtaining_extensions

Does firefox/mozilla test add ons, plug ins and extensions

I am really new to all of add ons, plug ins, etc. I am wondering if these get tested or do you just let anyone submit add ons, plug ins, etc. without knowing they could contain a virus or bug. I don't want to download some add on only to find it just sent me a virus. How do we know they're safe?

Sorry that you had a bad experience with a Firefox add-on, but it's not clear to me whether you downloaded DoNotTrackMe from here - https://addons.mozilla.org/en-US/firefox/addon/donottrackplus/
or whether you got it from the '''abine''' website - http://www.abine.com/donottrackme.html
That makes a '''big''' difference because the version of that add-on which is hosted at AMO is not the same as '''adbine''' is providing at their website. I saved both versions to disk and opened the XPI package of both to inspect the install.rdf file; while the overall XPI file size appears to be the same there are major differences in the install.rdf file - the abine version has its own Update URL listed, where the version at AMO would be updated thru AMO as almost all add-ons hosted at AMO are updated.
Minor difference? Or one that allows '''abine''' to do what it wants after installation?

I updated Firefox and the extensions and keep getting "restart firefox for changes to take effect." Even after restarting, none of the add-ons actually update and do not appear, for instance, noscript. Please help!

There are a bunch of add-ons that recently were updated, including noscript, adblock, etc. These add-ons were updated successfully and say in the add-on window they will be installed the next time Firefox restarts. There's also a bar that says "restart firefox now" and even when clicking restart firefox, none of the updates seem to load. I had to manually download the noscript the last time to get it to work but alas with the latest update, again, same problems. i tried disabling other plugins with no impact either. Anyone else having a similar problem and does anyone know how to get this resolved?

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) 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 "Find Updates" button (in Firefox 4: right-click the extension -> "Find Updates") to do a compatibility check.

Some add-ons icons vanished and firefox is unstable

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