title: DevEnvDir in VS2017 points to VS2015
body: <p>In my extension project file I'v set Start Action to start Visual Studio by setting <code>StartPrograms</code>  in my project file (.vbproj if that matters)</p>
  
  <pre><code>&lt;StartPrograms&gt;$(DevEnvDir)devenv.exe&lt;/StartPrograms&gt;
  </code></pre>
  
  <p>The problem is that when the project is open in VS2017 it opens VS2015 and in project properties I see:</p>
  
  <p><a href="https://i.stack.imgur.com/t5Q4u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t5Q4u.png" alt="Project properties"></a></p>
  
  <p>Is there something wrong with my project? Or do I undersant DevEnvDir wrong way?</p>