Weiterleitungs Fehler?

<?php
// ************************************************************************************//
// * WoltLab Burning Board 2
// ************************************************************************************//
// * Copyright (c) 2001-2004 WoltLab GmbH
// * Web           http://www.woltlab.de/
// * License       http://www.woltlab.de/products/burning_board/license_en.php
// *               http://www.woltlab.de/products/burning_board/license.php
// ************************************************************************************//
// * WoltLab Burning Board 2 is NOT free software.
// * You may not redistribute this package or any of it's files.
// ************************************************************************************//
// * $Date: 2004-10-20 13:24:57 +0200 (Wed, 20 Oct 2004) $
// * $Author: Burntime $
// * $Rev: 1453 $
// ************************************************************************************//




define('WBB_ACP_LOGIN', true);
require('./global.php');


if (isset($_REQUEST['url'])) $url = htmlconverter($_REQUEST['url']);
else $url = '';


if (!$wbbuserdata['a_can_use_acp']) {
        if (isset($_COOKIE[$cookieprefix.'userid'])) {
                list($l_username) = $db->query_first("SELECT username FROM bb".$n."_users WHERE userid='".intval($_COOKIE[$cookieprefix.'userid'])."'");
                $l_username = htmlconverter($l_username);
        }
        else $l_username = '';


        if ($allowloginencryption == 1) {
                $authentificationcode = makeAuthentificationcode(0);
                $adminsession = new adminsession();
                $adminsession->create($result['userid'], $REMOTE_ADDR, $HTTP_USER_AGENT, $authentificationcode);
                $session['hash'] = $adminsession->hash;
        }


      if($securityconfig[acp_security_login]) {
        eval("\$tpl->output(\"".$tpl->get("security_login", 1)."\",1);");
      } else {
        eval("\$tpl->output(\"".$tpl->get("login", 1)."\",1);");
      }
        exit();
}


eval("\$tpl->output(\"".$tpl->get("frameset", 1)."\",1);");
?>