Can't install any add-ons after upgrading to Firefox 4.. tried about:config, still nothing. How come?

No matter which add-on I try to install, it says, "Software Installation is currently disabled. Click enable and try again." .. I've tried clicking enable as well as going to about:config and toggling xpi.enabled.. still nothing. Please help.

Ok. Fixed it.
Had to create a new profile.
If anyone has (had) the same problem, and you have a lot of bookmarks you don't wanna lose, make sure you back them up on your old profile as a saved file--on your desktop, create a new profile, and then import them in your new profile.
: )

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Can't install any add-ons after upgrading to Firefox 4.. tried about:config, still nothing. How come?

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