title: can't display error messages with customErrors=Off in SharePoint 2010
body: <p>I changed the following web.config:</p>
  
  <pre><code>1- VirtualDirectory\80\web.config
  2- 14\TEMPLATE\LAYOUTS\web.config
  3- 14\TEMPLATE\ADMIN\web.config
  4- 14\CONFIG\web.config
  
  CallStack="True", Debug="True" and customErrors="Off"
  </code></pre>
  
  <p>on all the 4 web.config files but still I can't display the detailed error message</p>
  
  <p>I only get this: 
  server error in "/" application runtime error</p>
  
  <p>and some instruction on how to display the detailed error message.</p>
  
  <p>I need your help.</p>