TFSAdmin Tool would not work for TFS custom groups?

Jan 14, 2009 at 1:21 AM

When I run the tool and connect to the server and my project, I can see the TFS Group I created, i.e. 'Team Foundation Developers'.
However, when I assign some permissions in SharePoint and Reporting Services to the group and press 'Commit Changes' I only get errors, like this:

Added \ Team Foundation Developers SP Read Failed \
Added \ Team Foundation Developers RS Browser Failed \

Is the tool supposed to work with TFS group or is it for assigning individual users only?