Warning: require_once(pre-check.php) [function.require-once]: failed to open stream: No such file or directory in /xxxx.XX/init.php on line 35

Fatal error: require_once() [function.require]: Failed opening required 'pre-check.php' (include_path='.:/:/usr/local/php/pear5') in /xxxx.XX/init.php on line 35