I have been using Windows Live Onecare Safety Scanner on our server (MS Server 2003 R3 Standard Edition SP2) once a month for quite some time but for some reason today when I try to run the Full Service Scan and then click on "Install the scanner", I get the message "We were unable to install the scanner" and in a yellow bar at the top of the window it says "An add-on for this website failed to run. Check the security settings in Internet Options for potential conflicts." I made sure the website is added to my Trusted Sites and looked through the Trusted Site settings for anything that appeared as if it might block this action. I then closed IE and reopened but still get the same error message. What to do?