IPB [2] require_once(./sources/register.php) [function.require-once]: failed to open stream: No such file or directory (: /index.php. : 652)

Fatal error: require_once() [function.require]: Failed opening required './sources/register.php' (include_path='.:/opt/alt/php53/usr/share/pear:/opt/alt/php53/usr/share/php') in /home/queenrocks/public_html/old/index.php on line 652