New
#21
Can you please upload your C:\Windows\WindowsUpdate.log file? - it may show more details on the failure-mode of the SP1 install, and enable fixing it short of a repair install.
Unfortunately, although there's a mass of data in the CBS logs, there's not a lot there that I can understand well enough to suggest an immediate way forward, so the background data from the WU log should help us narrow down the problem areas.