title: Blank Joomla administrator screen (and frontend) after attemping update from 2.5.24.
body: <p>HELP PLEASE!  When upgrading my Joomla 2.5.24 to 3.3, the process hung.  Now I get the WSOD and get into the administrator (front end does not work either) with error:</p>
  
  <p>ADMINISTRATOR:
  Fatal error: Call to undefined method JAdministrator::setHeader() in /home/.... /libraries/cms/html/behavior.php on line 712 </p>
  
  <p>FRONTEND:
  Fatal error: Call to undefined method JHtml::getJSObject() in /home/..... /libraries/cms/html/behavior.php on line 271</p>
  
  <p>I did a backup up all databases and the files prior to update, but the problem is not resolved when restoring either.  I have spent all day trying to figure this out, and I don't know how to debug the setheader().  Can anyone please help me?</p>