title: CakePHP Error: Class 'String' not found in Acl
body: <p>My Acl admin is corrupt and I have no idea why, since I haven't changed anything from when it used to work.</p>
  
  <p>When I go to <code>/acl</code>, I get the following error:</p>
  
  <blockquote>
    <p>Error: Class 'String' not found 
        File: /app/Plugin/Acl/Controller/Component/AclReflectorComponent.php<br>
        Line: 17</p>
  </blockquote>
  
  <pre><code>public function getPluginName($ctrlName = null)
  {
      $arr = String::tokenize($ctrlName, '/');   &lt;-----  Line: 17
      if (count($arr) == 2) {
          return $arr[0];
      } else {
          return false;
      }
  }
  </code></pre>
  
  <p>I checked what's in <code>$ctrlName</code> and the value is <code>Acl/Acl</code>.</p>
  
  <p>I'm completely lost here, what should I do?</p>