extensions.ini FOUND
   extensions.cache UNFOUND
   extensions.rdf FOUND

   extensions.sqlite FOUND
   extensions.sqlite-journal (if found) UNFOUND

I have successfully installed several Add-ons and the "icon" for each one does not appear anywhere (Menu/Customize, toolbar, Tools). However, they all appear in Add-ons. I am reopening this post because the instructions out in Support are too vague for me because I am a basic user and not a developer. I previously posted here and have gotten no responses. I am using Vista and FF Version 49.0.1. I DO NOT want to refresh and loose all my Add-ons. I did follow this unsuccessfully: [Exit Firefox completely, then open your Firefox profile folder (read the linked article for its location) and delete or rename these files: extensions.ini FOUND extensions.cache UNFOUND extensions.rdf FOUND Starting in Firefox 4, also delete or rename: extensions.sqlite FOUND extensions.sqlite-journal (if found) UNFOUND You may also need to delete or rename the compatibility.ini FOUND file, to rebuild some other files in the profile folder. Note: Although the above files can be deleted, renaming them (e.g., "extensionsOLD.ini", "extensionsOLD.cache", etc.) is generally considered a safer option. This achieves the same result, but allows the user to retrieve any possibly required information from them later on.] I attempted opening the Browser Console and looking for errors but quickly discovered I was in OVER MY HEAD! Can someone PLEASE HELP...I sincerely appreciate it. Sharon C Wallace