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I'm using Firefox 3.54 and just upgraded the Firebug add-on to the latest version.

I restarted Firefox but the installation of Firebug wasn't finished properly. In the add-on dialog it says that it will be installed next time I'm restarting - but it won't.

Any idea how to fix this? I have already deactivated all other add-ons but that hasn't helped.

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migrated from Nov 6 '09 at 1:44

This question came from our site for professional and enthusiast programmers.

I had this problem installing Firebug 1.7.3 on Firefox 5 (Windows XP), and deleting the profile worked for me. – Eric Wilson Jun 24 '11 at 12:53

Delete your profile and try again.

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Or restart your computer if it's Windows. If you delete your profile, make sure you backup your bookmarks. – Rob Nov 6 '09 at 1:01
  1. Completely remove Firebug and install the latest version. If it doesn't work -
  2. Disable all your other add-ons and install it again. If still no luck -
  3. Delete your profile. Install Firebug first, then all your other add-ons.

If you have to delete your profile, remember to make a backup first. You can try MozBackUp. It can make complete backups of your profile.

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