The most likely cause of this message is installing from an older CD. Install the One Care trial -
http://onecare.live.com/standard/en-us/install/install.htm See this article on how to activate One Care -
http://support.microsoft.com/kb/935899 if you are a new subscriber. If you are already a subscriber and are installing on a new computer open One Care, select "Subscribe" and when asked for a Live ID enter the Live ID and password associated with your subscription and One Care will activate.
Jim - MVP Windows Live - Forum Moderator - Live One Care - Live Mesh