title: Push to Nuget.Server fails after upgrade to 2.0.1
body: <p>I upgraded a nuget.server that we use internally to 2.0.1 from 1.7. After upgrade push stopped working, it looks like it is working but the package is not pushed.</p>
  
  <p>After I runt <code>nuget push ...</code> I get the message "Your package was pushed." but nothing is pushed and I don't get any error messages. Any ideas?</p>