Hi Jmac, I think one of the Firefox profile files got damaged that controls the addon icons. I believe deleting it or renaming it while Firefox is closed will forced it to recreate a new working file that will make all your addons reappear. But after doing this, you might have to go into the Customize area & drag out those extensions icons to their original spots. The file is named '''xulstore.json'''. Open the Firefox profile folder using steps below. Then leave the folder open & close Firefox all the way down. Wait a few moments then rename '''xulstore.json''' to '''xulstore.old'''. Start Firefox again. See if the extension icons have reappeared or if they have reappeared in the Customize area. You can reach that by right-clicking on a empty area of the toolbar > Customize toolbar.... or click the 3 line menu button on the right edge of the toolbar, click '''More Tools > Customize toolbar...''' To locate your profile and the xulstore.json file: [[Profiles - Where Firefox stores your bookmarks, passwords and other user data]]