title: TFSBuild command line / vNext 2015
body: <p>Premise: I think this is a bug/missing functionality in TFS 2015</p>
  
  <p>When I create a new Build (non-xaml) definition using the TFS website, I am not able to call it using the command line <code>TFSBuild start</code> command.</p>
  
  <p>If I create a standard XAML definition, I can start it using the command line.</p>
  
  <p>Any idea if the command line is not able to start a new-style definition?</p>