Several people are having this issue - not sure what the answer is. I've sent feedback in to Microsoft describing this very issue. What path did you follow to move to Windows 7? Did you do a fresh install, upgrade from Vista? In my case, I did a fresh install in a virtual environment and had no problems, but when I upgraded my computer from Vista SP1 to 7, this problem arose. Tonight I'll be trying a clean install on my box to see if this resolves the issue. Otherwise I think we're dead in the water until Microsoft addresses this.