title: What's the reason for error message? I am using VS 2010 professional edition
body: <p>What's the reason for error message "The snapshot is out of date and cannot be used anymore because type tree has been updated, A new snapshow needs to be acquired"? </p>
  
  <p>This error appeared right after I launched VS2010 and added username/pwd to connect to TFS repository.</p>
  
  <p>I am using VS 2010 professional edition.</p>