please confirm that the plugin that you are trying to remove is located in /home/youruser/.mozilla/firefox/YOURPROFILE.default/extensions
If the extension that you want to remove is located /usr/lib/firefox/extensions you can't remove it from firefox as a normal user. Thank you for your report! ** Changed in: firefox (Ubuntu) Status: New => Invalid -- Extensions for Firefox installed via the Install/Remove Extensions app are not removable. https://bugs.launchpad.net/bugs/156090 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs