title: IIS7 deployment - duplicate 'system.web.extensions/scripting/scriptResourceHandler' section
body: <p>On attempting to deploy a .net 3.5 website on the default app pool in IIS7 having the framework section set to 4.0, I get the following error.</p>
  
  <blockquote>
    <p>There is a duplicate
    'system.web.extensions/scripting/scriptResourceHandler' section
    defined.</p>
  </blockquote>
  
  <p>Commenting off the offending lines didn't help either. Any pointers on what I need to do or look at?</p>