TF30177 Error When Installing Team Foundation Beta 3 Refresh

After installing the Beta 3 Refresh of Team Foundation Server, I had a small problem -- I couldn't create new team projects. I received a TF30177 error when the team site was configured in WSS. Rob Caron pointed me to the WSS installation, where the default virtual server apparently hadn't been extended. I investigated a bit and found that although the WSS config database did have an entry for the default virtual server in the VirtualServers table, and the config database had been created, the virtual server had apparently not been properly extended.

I found that running the service account (TFSservice) as a local admin would enable the Team Foundation Server installation to properly configure WSS. I'm not sure if this is a problem with WSS SP2 (which is now required), or a problem with the TFS install.

Update:The error is TF30177, not TF31077. Also, I've run some tests, and it looks like the TFSService account also needs elevated privileges after installation -- if you drop back to just User group membership it's not possible to create a project.