title: <pages validateRequest="false" /> and <httpRuntime requestValidationMode="2.0" /> not working
body: <p>I've inherited an MVC asp.net app using framework 4.0.</p>
  
  <p>I'm getting the dreaded "A potentially dangerous Request.Form value was detected from the client" error and all my research leads me to believe that this should fix it:</p>
  
  <pre><code>&lt;system.web&gt;
      &lt;httpRuntime requestValidationMode="2.0" /&gt;
      &lt;pages validateRequest="false" /&gt;
  &lt;/system.web&gt;
  </code></pre>
  
  <p>However, I've added that to my web.config and still get the error. I'm at the end of my rope here, what am I missing?</p>