title: Why does Mage.exe not generate a compatibleFrameworks attribute?
body: <p>We are using <a href="http://msdn.microsoft.com/en-us/library/acz3y3te.aspx" rel="noreferrer">Mage.exe</a> to generate our application's manifests as part of our build process. Upon upgrading to <a href="http://en.wikipedia.org/wiki/.NET_Framework" rel="noreferrer">.NET</a> 4 we now find it generates an invalid manifest.</p>
  
  <p>The reason is there isn't a compatibleFrameworks attribute being set in the application manifest which we generate every build.</p>
  
  <p>Is there a way we can make Mage.exe add this element or should we only ever update existing manifests?</p>