[SOLVED] Cannot remove Firefox add-on

Hello,
Recently I installed FoxFilter add-on in Firefox. This add-on is not functioning properly, I cannot change preferences. Also it cannot be uninstalled from the Firefox add-ons interface. All buttons on FoxFilter are disabled.

http://home.tiscali.nl/chaos_and_ord...on_Firefox.png

Is there another way to remove a Firefox add-on, and how?

Thanks,
Boris

You need to start FF in safe mode.

Code:

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/path/to/firefox/firefox -safe-mode

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This should allow you to make the necessary changes.

Thanks, your advice helped!