не работает импорт компонентов K2 в JComments - Вопросы по интеграции

	function importK2()
	{
		$db = & JCommentsFactory::getDBO();
		$db->setQuery( "DELETE FROM #__jcomments WHERE source = 'k2'" );
		$db->query();

		$query	= "SELECT c.*"
			. "\n, u.username, u.name, u.id as userid"
			. "\nFROM `#__jw_k2_comments` AS c"
			. "\nLEFT JOIN `#__users` AS u ON c.user_id = u.id "
			;
		$db->setQuery( $query);
		$rows = $db->loadObjectList();

		foreach( $rows as $row) {
			$comment = new JCommentsDB( $db );

			$comment->object_id 	= $row->item_id;
			$comment->object_group 	= 'com_k2';
			$comment->parent	= 0;
			$comment->userid	= isset($row->userid)? intval($row->userid) : 0;
			$comment->name 		= isset($row->full_name)? $row->full_name : $row->name;
			$comment->username 	= isset($row->full_name)? $row->full_name : $row->username;
			$comment->comment	= JCommentsMigrationTool::processComment($row->comment_text);
			$comment->email 	= $row->comment_email;
			$comment->homepage	= $row->comment_url;
			$comment->ip		= '';
			$comment->published 	= $row->published;
			$comment->date 		= $row->comment_date;
			$comment->source 	= 'k2';
			$comment->lang 		= JCommentsInput::getParam($_POST, $comment->source . '_lang', '');

			$comment->store();
		}

		$db->setQuery("SELECT COUNT(*) FROM `#__jcomments` WHERE `source`= 'k2'");
		return $db->loadResult();
	}

	function importK2()
	{
		$db = & JCommentsFactory::getDBO();
		$db->setQuery( "DELETE FROM #__jcomments WHERE source = 'k2'" );
		$db->query();

		$query	= "SELECT c.*"
			. "\n, u.name"
			. "\nFROM `#__k2_comments` AS c"
			. "\nLEFT JOIN `#__users` AS u ON c.userid = u.id "
			;
		$db->setQuery( $query);
		$rows = $db->loadObjectList();

		foreach( $rows as $row) {
			$comment = new JCommentsDB( $db );

			$comment->object_id 	= $row->itemID;
			$comment->object_group 	= 'com_k2';
			$comment->parent	= 0;
			$comment->userid	= isset($row->userID)? intval($row->userID) : 0;
			$comment->name 		= isset($row->userName)? $row->userName : $row->name;
			$comment->username 	= isset($row->userName)? $row->userName : $row->name;
			$comment->comment	= JCommentsMigrationTool::processComment($row->commentText);
			$comment->email 	= $row->commentEmail;
			$comment->homepage	= $row->commentURL;
			$comment->ip		= '';
			$comment->published 	= $row->published;
			$comment->date 		= $row->commentDate;
			$comment->source 	= 'k2';
			$comment->lang 		= JCommentsInput::getVar($comment->source . '_lang', '');

			$comment->store();
		}

		$db->setQuery("SELECT COUNT(*) FROM `#__jcomments` WHERE `source`= 'k2'");
		return $db->loadResult();
	}