Здравствуйте господа! При установке возникает ошибка:

Warning: fopen(./sites/default/default.settings.php) [function.fopen]: failed to open stream: No such file or directory in D:\w_server\site\drupal\includes\install.inc on line 188

Warning: Cannot modify header information - headers already sent by (output started at D:\w_server\site\drupal\includes\install.inc:188) in D:\w_server\site\drupal\includes\install.inc on line 618

Warning: Cannot modify header information - headers already sent by (output started at D:\w_server\site\drupal\includes\install.inc:188) in D:\w_server\site\drupal\includes\install.inc on line 619

Объясните, мне непутевому, что надо исправить?