Hello fellow SP'ers. I posted a possible fix for those that are having Windows 7 issues over on the winSPMBT site. Posted here as a public service message, is the link to that page for those that hang around the WWII site and might not get over there:
http://forum.shrapnelgames.com/showthread.php?t=45099
Hope this gets the remaining players back into the game! Good luck.