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None of my add-ons work despite an apparently successfully install. They are listed in Tools>Add-ons, but if I click the 'options' button of any add-on selected, that window freezes.

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  • 3 have this problem
  • Last reply by cor-el

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Windows XP SP3 Firefox/3.6.8

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You can delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox 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 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.