I am installing extensions for the first time and don't understand what I'm doing wrong. When I go to the Add-on screen and choose extensions, they show in the list but when I choose tools in the menu the extensions don't show up. I have restarted several times. I didn't get an error message when I added the extensions. On the extensions list only options are disable or remove. Extensions I added were manually sort folders and colored folders. Thank you for the help.