I had the exact same failure. The group recommended a reinstall over the top
of my Exchange 2007 install, then try to run the SP1 upgrade. Another
commented that the SP1 install went withou a glitch.
Roy
> I'm trying to install SP1 for Exchange 2K7 but it fails on the section for
> 'Unified Messaging Server Role' with the following error:
[quoted text clipped - 3 lines]
>
> Any ideas?