переустановил форум, теперь при попытке зайти на свой сайт получаю ошибки:
Warning: head(themes//theme.php): failed to open stream: No such file or directory in q:\home\steel-bear.msk.ru\www\header.php on line 36

Warning: head(): Failed opening 'themes//theme.php' for inclusion (include_path='.;/usr/local/php/PEAR') in q:\home\steel-bear.msk.ru\www\header.php on line 36

Fatal error: Call to undefined function: themeheader() in q:\home\steel-bear.msk.ru\www\header.php on line 72


Потом чищу куки и заново пытаюсь зайти, получаю таки ошибки:
Warning: main(language/lang-.php): failed to open stream: No such file or directory in q:\home\steel-bear.msk.ru\www\mainfile.php on line 196

Warning: main(): Failed opening 'language/lang-.php' for inclusion (include_path='.;/usr/local/php/PEAR') in q:\home\steel-bear.msk.ru\www\mainfile.php on line 196

Warning: head(themes//theme.php): failed to open stream: No such file or directory in q:\home\steel-bear.msk.ru\www\header.php on line 36

Warning: head(): Failed opening 'themes//theme.php' for inclusion (include_path='.;/usr/local/php/PEAR') in q:\home\steel-bear.msk.ru\www\header.php on line 36

Fatal error: Call to undefined function: themeheader() in q:\home\steel-bear.msk.ru\www\header.php on line 72

что это такое и как с этим бороться?