title: enable-migrations error : project failed to build
body: <p>Using ASP.NET MVC4 with EF4.3</p>
  
  <p>Running <code>Enable-Migrations</code> from PM Console</p>
  
  <blockquote>
    <p>System.Management.Automation.RuntimeException: The project 'MyProj'
    failed to build. The project 'MyProj' failed to build.</p>
  </blockquote>
  
  <p>The project builds (control-shift-B) </p>
  
  <p>Is there any way to get more detail on this error to diagnose?</p>