title: unable to find a version of silverlight developer runtime installed
body: <p>In the following environment:</p>
  
  <p>-VS2012 </p>
  
  <p>-Windows 7 64bit</p>
  
  <p>-Microsoft Silverlight 5 SDK</p>
  
  <p>I have created a few lightswitch applications in VS2012 but I am running into an error when attempting to create a new one or open an existing lightswitch project. I receive a pop-up that says "unable to find a version of silverlight developer runtime installed".</p>
  
  <p>There is a link on the pop-up which starts a download but after downloading it, I still receive the same error. </p>