При регистрации пользователя в phpbb3 выпадают такие ошибки. в чем может быть проблема?

phpBB location settings:
phpBB forum root path:
Z:/home/magaz/www/phpBB3/

Path to phpBB api file:
sites/all/modules/phpbbforum/includes/

phpBB api file name:
phpbb_api.php

не смог пропатчить phpBB-embed-3.0.8.patch. может ли быть в этом проблема?

ошибки:

[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions_user.php
on line 1663: call_user_func_array() expects parameter 1 to be a valid
callback, function 'validate_language_iso_name' not found or invalid function name

Warning: Cannot modify header information - headers already sent by
(output started at Z:\home\magaz\www\phpBB3\includes\functions.php:3823)
in Z:\home\magaz\www\phpBB3\includes\functions.php on line 4688

Warning: Cannot modify header information - headers already sent by
(output started at Z:\home\magaz\www\phpBB3\includes\functions.php:3823)
in Z:\home\magaz\www\phpBB3\includes\functions.php on line 4690

Warning: Cannot modify header information - headers already sent by
(output started at Z:\home\magaz\www\phpBB3\includes\functions.php:3823)
in Z:\home\magaz\www\phpBB3\includes\functions.php on line 4691

Warning: Cannot modify header information - headers already sent by
(output started at Z:\home\magaz\www\phpBB3\includes\functions.php:3823)
in Z:\home\magaz\www\phpBB3\includes\functions.php on line 4692