First of all - congrats on this release!
My question is why Windows Server 2008 is listed as a supported OS for Update Manager PowerCLI?
PowerCLI itself is not officially supported on this OS according to Release Notes (I know that it does work well on win2008 but still...).
If you have Windows 7, you need to use v4.1 of the VUM PowerCLI. When I try to install v4.0U1 on my Win7 x64 desktop, it fails with "Error 1722: There is a problem with the Windows installer package". Also, if you install v4.1 of the VUM PowerCLI, you must also have a v4.1 vCenter since VUM is required to be v4.1. Guess I have to wait until we upgrade vCenter to v4.1...