I am using Visual Studio Express 2010 instead of standard or Team versions. I have the latest version of PowerGUI installed (installed it RIGHT before trying to install this) and everything else seems okay. I did also run the Script Editor as shown in the requirements (missed this at first, so if anyone else is seeing these issues, beware - it isn't just the client that needs run, but the script editor as well!!!) When I try to add the extention, it fails with a error "This extention is not installable on any currently installed products". Is this because I am using VSExpress editions or is it something that should work anyway. I am still trying to troubleshoot it, but thought I would have a look here before continuing in case it was documented somewhere. I haven't seen anything so I am throwing it out there for others to consider and perhaps answer.