title: server 2008 .net framework 4 503 error
body: <p>I just installed .net 4 on my server 2008 and I keep getting
  Service Unavailable</p>
  
  <p>HTTP Error 503. The service is unavailable.</p>
  
  <p>messages from any application I try to run as .net 4. The application pool keeps stopping. Event view shows: "The worker process failed to pre-load .Net Runtime version v4.0.30319."</p>