Forum error

$response_query = "SELECT pn.*, u.user_id, u.user_name, u.user_avatar, u.user_status
        FROM ".DB_POST_NOTIFY." pn
        LEFT JOIN ".DB_USERS." u ON pn.notify_sender = u.user_id
        WHERE post_id='".$this->post_id."' GROUP BY pn.notify_mood_id ORDER BY pn.notify_mood_id ASC, pn.post_id ASC";

$inf_newtable[] = DB_FORUM_MOODS." (
   mood_id MEDIUMINT(8) UNSIGNED NOT NULL AUTO_INCREMENT,
   mood_name TEXT NOT NULL,
   mood_description TEXT NOT NULL,
   mood_icon VARCHAR(50) NOT NULL DEFAULT '',
   mood_notify SMALLINT(4) NOT NULL DEFAULT '-101',
   mood_access SMALLINT(4) NOT NULL DEFAULT '-101',
   mood_status SMALLINT(1) NOT NULL DEFAULT '0',
   PRIMARY KEY (mood_id)
   ) ENGINE=MyISAM DEFAULT CHARSET=UTF8 COLLATE=utf8_unicode_ci";

$inf_newtable[] = DB_POST_NOTIFY." (
   post_id MEDIUMINT(8) UNSIGNED NOT NULL DEFAULT '0',
   notify_mood_id MEDIUMINT(8) UNSIGNED NOT NULL DEFAULT '0',
   notify_datestamp INT(10) UNSIGNED NOT NULL DEFAULT '0',
   notify_user MEDIUMINT(8) UNSIGNED NOT NULL DEFAULT '0',
   notify_sender MEDIUMINT(8) UNSIGNED NOT NULL DEFAULT '0',
   notify_status tinyint(1) UNSIGNED NOT NULL DEFAULT '1',
   KEY notify_datestamp (notify_datestamp)
   ) ENGINE=MyISAM DEFAULT CHARSET=UTF8 COLLATE=utf8_unicode_ci";