title: Error using nuget in VS2012 "missing packages"
body: <p>When I build my project from within VS2012 I get the following error message</p>
  
  <pre><code>This project references NuGet package(s) that are missing on this computer. 
  Enable NuGet Package Restore to download them. 
  </code></pre>
  
  <p>I have the nuget options set for NuGet to download missing packages.</p>
  
  <p><img src="https://i.stack.imgur.com/Wa05O.jpg" alt="picture of nugget options"></p>
  
  <p>Yet I still get the error. 
  I have nugget 2.7 installed. With VS2012 update 3</p>