Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

"You don't have any add-ons of this type installed." despite having multiple add-ons

  • 3 replies
  • 9 have this problem
  • 15 views
  • Last reply by Mikey

WolfyPDX
WolfyPDX
more options

Since upgrading to FF 8.0.1, I get the above message when I attempt to access Add-ons, Extensions on my iMac, despite having a number of different extensions installed, all of which appear to be actively working. The problem does NOT appear on my Macbook Pro, also running FF 8.0.1. Both systems have OS X 10.7.1 running. I have tried restarting FF, rebooting, and, of course, clearing the cache.

Since upgrading to FF 8.0.1, I get the above message when I attempt to access Add-ons, Extensions on my iMac, despite having a number of different extensions installed, all of which appear to be actively working. The problem does NOT appear on my Macbook Pro, also running FF 8.0.1. Both systems have OS X 10.7.1 running. I have tried restarting FF, rebooting, and, of course, clearing the cache.

Chosen solution

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 do a compatibility check or see if there is a compatibility update available.

Read this answer in context 👍 1

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

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 do a compatibility check or see if there is a compatibility update available.

nana41
nana41
more options

Since upgrading to FF 8 all I get is freezing and/or hanging & today FF crashed. Once again I uninstalled an AddOn "ShareThis" since I thought that might be the problem & it was. Then I found out that "ShareThis, Shareaholic & AddThis" are all not compatible with FF 8.. OK so what's left then? I did a single AddOn of StumbleUpon & whoopee now what do I do for the other sites I use ? Not interested in anything that has to do with FB since I'm not a fan I just want to have an AddOn that supports some of the social sites "I choose" to use.. What is going on with FF ?

Mikey
Mikey
more options

Same problem after upgrade to 10.0 on a Windows 7 machine.