Hello CarlDavenport, Assuming that you are talking about this add-on : https://addons.mozilla.org/en-US/firefox/addon/dissenter-extension/ Under 'More information' you'll see : 'Support Email' - maybe you could ask your question there ? --------------------------------------------------------------------------------------------- Separate issue : Your system details show that you have two versions of Flash installed, which might cause problems. You can uninstall the older version : https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html In case you have to reinstall the latest version : https://get.adobe.com/flashplayer/ Note : some 'extras' may be offered in the download.