Not sure if this is a bug but when I hit Notificication on User menu I get a blank page. Using 2.0.13. PHP debug reports

Fatal error: Call to a member function on a non-object in /home/hskinn13/public_html/notifications.php on line 96
Warning [PHP]: Invalid argument supplied for foreach() in file /home/hskinn13/public_html/include/notification_functions.php line 99
Warning [PHP]: Invalid argument supplied for foreach() in file /home/hskinn13/public_html/include/notification_functions.php line 99
Warning [PHP]: Invalid argument supplied for foreach() in file /home/hskinn13/public_html/include/notification_functions.php line 174

Which lines are resp:

foreach ($not_config['category'] as $category) {

and

foreach ($not_config['event'] as $event) {