STAGE 2 have created error:
INSERT INTO `feedback_feedback` ( `fb_id`, `fb_date`, `fb_sender_id`, `fb_receiver_id`, `fb_ip`, `fb_comment`, `fb_rating`, `fb_content_id`, `fb_type`, `fb_class` ) VALUES ( NULL, 1325351424, 18343, NULL, '90.190.244.172', '+++++++++++++++++++++++++++++++++++++++++++', 1, 117471, 0, 'IPS\forums\Topic' )
IPS\Db\Exception: Column 'fb_receiver_id' cannot be null (1048)