Друзья, на проекте со старой версией движка (0.3.1) при попытке удаления публикации вываливается вот такая вот лабуда. Подскажите, в чем причина и куда копать:

SQL Error: Cannot delete or update a parent row: a foreign key constraint fails (`nepropadu/prefix_topic_comment`, CONSTRAINT `prefix_topic_comment_fk` FOREIGN KEY (`comment_pid`) REFERENCES `prefix_topic_comment` (`comment_id`) ON DELETE CASCADE ON UPDATE CASCADE) at /home/esoterix/nepropadu.ru/http/classes/modules/topic/mapper/Topic.mapper.class.php line 118
Array ( [code] => 1451 [message] => Cannot delete or update a parent row: a foreign key constraint fails (`nepropadu/prefix_topic_comment`, CONSTRAINT `prefix_topic_comment_fk` FOREIGN KEY (`comment_pid`) REFERENCES `prefix_topic_comment` (`comment_id`) ON DELETE CASCADE ON UPDATE CASCADE) [query] => DELETE FROM prefix_topic WHERE topic_id = 454 [context] => /home/esoterix/nepropadu.ru/http/classes/modules/topic/mapper/Topic.mapper.class.php line 118 ) 

Тема закрыта, была проблема хостинга.