RWW Returns Error “There is a problem in Remote Web Workplace. A logon error occurred: The data that the server returned is not valid..”:
http://support.microsoft.com/default.aspx?scid=kb;en-us;2022997
SBS 2008 RWW fails to load due to missing assembly:
http://support.microsoft.com/default.aspx?scid=kb;en-us;2023002