title: How to solve 'This method must be called with an app access_token' error?
body: <p>I'm testing out scores api on my test app.</p>
  
  <p>So...I've singed up my app with the following permissions.</p>
  
  <pre><code>publish_stream,
  publish_actions,
  user_status,
  user_photos
  </code></pre>
  
  <p>After logged in, I'm requesting the following api in PHP</p>
  
  <pre><code>$loggedUser = $Facebook-&gt;getUser();
  $scoreUpdate = $Facebook-&gt;api('/'.$loggedUser."/scores", 'post', array('score'=&gt; 100));
  </code></pre>
  
  <p>I get the following error.</p>
  
  <blockquote>
    <p>This method must be called with an app access_token</p>
  </blockquote>
  
  <p>So I've checked what the sdk is sending to facebook, and I've confirmed that it is sending 'access_token' along with my params.</p>
  
  <p>What's the problem in this case?</p>