title: CakePHP Error: Call to a member function parseAccept() on a non-object
body: <p>I have just upgraded from <code>CakePHP 1.3</code> to <code>cakePHP 2.4.5</code>.</p>
  
  <p>I am getting the following error:</p>
  
  <pre><code>Fatal Error
  Error: Call to a member function parseAccept() on a non-object  
  File: /myapp/lib/Cake/Controller/Component/RequestHandlerComponent.php  
  Line: 157
  </code></pre>
  
  <p>I'm not calling the function <code>parseAccept()</code> anywhere within my controller, and so don't understand why I am getting this error.</p>