title: sharepoint error when creating a page
body: <p>I got this error message when i want to create a page in the SharePoint Central Administration :</p>
  
  <p>The base type 'xxxx' is not allowed for this page. The type is not registered as safe. </p>
  
  <p>The .aspx page references a codebehind class. I checked the namespaces, i added the  tag in the web.config, everything is fine, but it still doesn't work !</p>
  
  <p>Can someone please tell me why i got this error message ?</p>