Invalid argument supplied for foreach()" in file /var/www/red/mod/notifications/views/default/notifications/subscriptions/groupsform.php (line 7):

 global $NOTIFICATION_HANDLERS;
  line 7 --> foreach($NOTIFICATION_HANDLERS as $method => $foo) {
                $subsbig[$method] = get_entities_from_relationship('notify' . $method,$vars['user']->guid,false,'group','',0,'',99999);
                $tmparray = array();
                foreach($subsbig[$method] as $tmpent) {
                        $tmparray[] = $tmpent->guid;
                }
                $subsbig[$method] = $tmparray;
        }

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Maybe UTF8 codification?