title: Generic Error Page not decorated
body: <p>I have a generic error page which is not decorated by SiteMesh. </p>
  
  <p>May I know what is the reason ? </p>
  
  <pre><code>&lt;filter&gt;
    &lt;display-name&gt;SiteMesh_Filter&lt;/display-name&gt;
    &lt;filter-name&gt;SiteMesh_Filter&lt;/filter-name&gt;
    &lt;filter-class&gt;com.opensymphony.module.sitemesh.filter.PageFilter&lt;/filter-class&gt;
   &lt;/filter&gt;
   &lt;filter-mapping&gt;
    &lt;filter-name&gt;SiteMesh_Filter&lt;/filter-name&gt;
    &lt;url-pattern&gt;/*&lt;/url-pattern&gt;
   &lt;/filter-mapping&gt;
  
  &lt;error-page&gt;
    &lt;error-code&gt;404&lt;/error-code&gt;
    &lt;location&gt;/pages/error.jsp&lt;/location&gt;
   &lt;/error-page&gt;
  </code></pre>
  
  <p>Thanks. </p>