Fatal error:... on http://robotower.com

[Robot3]

Hello. I use Joomla 2.5.4 version od domain http://robotower.com and after i instal xpams and enable xmap contet plugin i go to Joomla Administration menu, on Xmap and get this error. Please advice what to do. Thanx.
Fatal error: Class 'JControllerLegacy' not found in /home/robotowe/public_html/administrator/components/com_xmap/xmap.php on line 20