title: Why does running the Silverlight 5 Beta prompt me to install Silverlight 4?
body: <p>When I run a Silverlight 5 project, the test page shows the 'Install Silverlight' logo. Clicking through shows the following detail:</p>
  
  <p>Installed version: Silverlight 5 (5.0.60401.0)
  Requested version: Silverlight 4 (4.0.60531.0)</p>
  
  <p>What determines the requested version? </p>
  
  <p><strong>Note</strong>
  The 'Target Silverlight Version' <strong>is</strong> set to version 5 in project properties. </p>
  
  <p>I am running the Silverlight .xap in the MVC project host generated by Visual Studio 2010.</p>