title: "Value does not fall within the expected range" when trying to add a reference in a project
body: <p>Suddenly I am getting this error "Value does not fall within the expected range" whenever I try to add a reference to any project. This also happens with a new blank project. It can list the current references fine.</p>
  
  <p>I rebooted the computer. I am not sure if the recent Update 2 caused this. This is my first add reference since the update. I am using Visual Studio 2013 on Windows 7 64bit. </p>
  
  <p>Any ideas?</p>
  
  <p><img src="https://i.stack.imgur.com/eqJon.gif" alt="enter image description here"></p>