title: Xamarin Studio reports Mono.Unix namespace not found when using GTK#
body: <p>I am trying to create a GTK# application in Xamarin Studio so I have created a GTK# solution it generates the following code using the editor</p>
  
  <p><a href="https://i.stack.imgur.com/irP3P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/irP3P.png" alt="error tooltip"></a></p>
  
  <p>As shown it shows an error saying that </p>
  
  <blockquote>
    <p>"Mono" could not be found.</p>
  </blockquote>
  
  <p>I also use Unity so that may be affecting Mono.</p>