Bug in punbb

After pressing 'install' it gives config body that looks:

'<?php

$db_type = 'mysql';
$db_host = 'localhost';
$db_name = 'punbb';
$db_username = 'xxx;
$db_password = 'xxx';
$db_prefix = '';
$p_connect = false;

$cookie_name = 'punbb_cookie';
$cookie_domain = '';
$cookie_path = '/';
$cookie_secure = 0;
$cookie_seed = 'd995a4b5';

define('PUN', 1);'

Where is ending '?>'?

Looks like this is not all config should be... OK, after adding '?>' i run index file and....nothing - blank page.