Ошибка после установки - Joomla 1.5: Установка и обновление

[20-Oct-2008 18:36:30] PHP Warning:  require_once(/vm/х/public_html/х/includes/phpInputFilter/class.inputfilter.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /vm/х/public_html/х/includes/joomla.php on line 77
[20-Oct-2008 18:36:30] PHP Fatal error:  require_once() [<a href='function.require'>function.require</a>]: Failed opening required '/vm/х/public_html/х/includes/phpInputFilter/class.inputfilter.php' (include_path='.:/usr/local/php5-fcgi/lib/php/') in /vm/х/public_html/х/includes/joomla.php on line 77

что это значит?

FAQ: Joomla не находит файл /includes/phpInputFilter/class.inputfilter.php

спасибо