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I have several Add-ons that state that they will install/uninstall after Firefox restarts but never does.

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I have several Add-Ons that state "This add-on will be installed (uninstalled in some cases) when Firefox is restarted." No matter how many times I restart Firefox they do not install or uninstall.

Some of the Add-ons include Adobe DLM (which is a major pain in the ars to begin with), NoScript, and United States English Spellchecker. I have had problems with other Add-ons not installing after after an update but after several attempts to reinstall them from the Add-on Gallery the finally installed again.

Alle svar (1)

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Try resetting the Extension Manager.
With Firefox closed, rename the following files in your profile folder:
extensions.cache
extensions.ini
extensions.rdf
and
compatibility.ini
They'll be re-created when you open Firefox.

Note : Although unwanted files/folders can be deleted, renaming them is generally considered a safer option. This achieves the same result, but allows the user to retrieve any possibly required information from them later on. In the case above, rename the above 4 files as , 'extensionsOLD.ini', 'extensionsOLD.cache', 'extensionsOLD.rdf, 'compatibilityOLD.ini'

Making sure Firefox closed: http://kb.mozillazine.org/Kill_application

Profile location: http://kb.mozillazine.org/Profile_folder
You may need to show hidden files to locate your profile (W2K & WinXP): http://www.microsoft.com/windowsxp/us.../hiddenfiles.mspx