title: Page uses an invalid or unsupported form of compression when debugging ASP.NET MVC app with Visual Studio 2013 Preview
body: <p>While trying to debug an <code>ASP.NET MVC</code> project using the recently released VS 2013 Preview I get this message:</p>
  
  <blockquote>
    <p>Content Encoding Error</p>
    
    <p>The page you are trying to view cannot be shown because it uses an
    invalid or unsupported form of compression.</p>
    
    <p>Please contact the website owners to inform them of this problem.</p>
  </blockquote>
  
  <p>In <code>Firebug</code> I see this error message:</p>
  
  <pre><code>SecurityError: The operation is insecure
  </code></pre>
  
  <p>Tried with Google Chrome and IE 11 and the same problem happens.</p>
  
  <p>What is causing this?</p>
  
  <p>Note: I'm on Windows 8.1 and debugging the site using IIS Express at <code>http://localhost:7777</code></p>
  
  <p>I can debug it just fine using VS 2012.</p>