Hi, I've been upgrading SP2 on many SBS 2008 without any problems, but now there is one. This SBS08 already has win SP2 and updated with the latest patches. When I launching the Exch SP2, the splash screen comes out with empy boxes and cannot click anywhere. I also tried with the Exch SP2 tool but still same thing. I downloaded Windows installer 4.5 x64 (Windows6.0-KB942288-v2-x64.msu) but is tells that it's seaching for updates and then "update does not apply to your system". Any suggestions?