title: VSTS build failing with error "Process 'msbuild.exe' exited with code '1'."
body: <p>Getting that build failed error because I have 4 warnings that read the same. </p>
  
  <pre><code>##[warning]C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v14.0\Python Tools\Microsoft.PythonTools.Django.targets(120,5): Warning : Errors while resolving environments: Some project interpreters failed to load:
  
  Interpreter d:\a\1\s\"name of project"\env\ has invalid value for 'Id': env
  Interpreter reference has invalid path: Global|PythonCore|3.4
  </code></pre>
  
  <p>I am using Python 3.4.4 64-bit if that makes a difference. </p>
  
  <p>The build is failing during the <code>Build solution **\*.sln</code> section of the build.</p>
  
  <p>Thank you in advance for any help.</p>