title: cannot be loaded in the 4.0 runtime without additional configuration information
body: <p>I'm getting this exception.. what could be the reason?</p>
  
  <pre><code>- 1/XX/2014 9:56:00 AM: 11253-Error creating configuration. 
  Could not load configuration, Mixed mode assembly is built against version 'v1.1.4322' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information. 
  Mixed mode assembly is built against version 'v1.1.4322' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information. 
  
  Application: xxxxxxxxx_xxxx.exe 
  Framework Version: v4.0.30319 
  Description: The process was terminated due to an unhandled exception. 
  Exception Info: System.NullReferenceException 
  Stack: 
  </code></pre>