I seem to be completely unable to install the Windows 7 SDK onto my machine, and the only solution I\'ve found on the web is to make a swathe of registry changes. I\'ve done
I could never get the Windows 7 SDK to install either, and it suggested I remove the latest SDK and Visual Studio 2012 Express. That didn't work.
There was also something about .NET 3.5. I installed the Server 2008 SDK with .NET 3.5, uninstalled Visual Studio 2010 redistributables and made sure redistributables were unchecked in the installation options.
Also, you need the .NET 4 framework already installed, which you can download from Microsoft's site. Then it worked.