When I upgraded to Firefox 7, all my add-ons (except for a few) were lost. Is there any way I can recover those add-ons (or at least find out what add-ons I had installed before the upgrade broke them)? I have tried upgrading to FF 7.01, and using the add-on recovery dialog, and neither of those have worked.

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is the extensions folder also deleted? Have you looked up your recycle bin for this folder? Dont forget to install FEBE addon next time – Hauser Oct 25 '11 at 21:10
Yes, the only extensions that are still there are the ones that still remained after some of the extensions went missing. – ephilip Oct 25 '11 at 22:25
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Firefox doesn't delete the non-compatible add-ons, it just disables them. You should see a list of all your add-ons, working and not-working in the 'add-on' tab. Firefox should also have checked to see if newer versions were available and installed them for you automatically too. If it didn't, either you told it not to, or there aren't any working (or compatible) versions available.

If there are no compatible versions available, you CAN make them work by editing the version limits in the 'install.rdf' file within the add-on/extension. This is not recommended, but CAN work, although by doing this, you automatically agree that we don't have to help you fix things if it goes bad. :) No, I won't explain how.

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It was not a compatibility issue. Firefox actually deleted the add-ons. They are not in the add-ons manager, and they seem to be gone from the computer (the add-ons folder) as well. – ephilip Oct 27 '11 at 1:13
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