title: Xamarin: The project 'Client' is unsupported
body: <p>I have sort of a problem with Xamarin. When I create new project "Blank App (Xamarin.Forms Shared)" in Visual Studio and build it right away without any modification I get an error </p>
  
  <blockquote>
    <p>The project 'Client' is unsupported</p>
  </blockquote>
  
  <p>This error has no project nor file specified.</p>
  
  <p>Nevertheless the project build successfully. Does anyone have any clue what this could mean and how can I get rid of this?</p>