Can't seem to access the add-on in Firefox. I had problems updating, the site suggested a clean install, which I did. I get the 'unable to load metadata', and I'm unable to find anything relevant to affect this issue. I'm running O/S 10.9.5, Firefox 36.0.1. I dloaded Chrome, which was absolutely useless -- it worked for three minutes, than refused to connect to the internet. And now this. Help?