Extension icons/menus are not visible even though the extensions are enabled. How to fix?
Extensions do not work as they should when enabled. They do not show up in their designated places (status bar, next to address bar, right-click menu). This applies to all extensions. I have disabled, re-enabled, and messed with the options. Nothing seems to work. Is there any way to fix this?
I have tried changing the settings in about:config, but that has no effect, either.
Alla svar (1)
You can delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder to reset the extensions registry. New files will be created when required.
See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.