title: Error plugin not run in joomla 2.5?
body: <p>I have a sample:</p>
  
  <pre><code>plugins
  --shopping
    ----jcomments
    --------jcomment.php
    --------jcomment.xml
  </code></pre>
  
  <p>in plugins/shopping/jcomments/jcomment.php</p>
  
  <pre><code>class plgShoppingJcomments extends JPlugin
      function plgShoppingJcomments(&amp;$subject, $config){ 
           parent::__construct($subject, $config);
      }
      function onBeforeDisplayProductView(&amp;$view) {
           die('test');       
      }
  }   
  </code></pre>
  
  <p>And view.html.php of a component com_shopping I call</p>
  
  <pre><code>JPluginHelper::importPlugin('shopping');
  $dispatcher =&amp; JDispatcher::getInstance();
  $dispatcher-&gt;trigger( 'onBeforeDisplayProductView', $view);
  </code></pre>
  
  <p>But i run code is this plugin not show result (die("test")), how to fix this plugin</p>