WARNING: session start error when enabling facebook mod

[onealien]

as soon as i enable facebook on my newly upgraded 4.1.9 i get this error:

Warning: session_start() [function.session-start]: open(/var/chroot/home/content/65/8678965/tmp/sess_g7r07pmpo8l14tsgi0128u6mu6, O_RDWR) failed: No such file or directory (2) in [path]/includes/facebook/facebook.php on line 37

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at [path]/includes/class_core.php:5570) in [path]/includes/facebook/facebook.php on line 37

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at [path]/includes/class_core.php:5570) in [path]/includes/facebook/facebook.php on line 37

any direction as to what i can do to solve this?

thanks