eXtplorer - PHP-based File Manager

In safe mode on my site component don't run.
in log:
PHP Warning: require_once(/usr/share/pear/PEAR.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /......./root/administrator/components/com_extplorer/libraries/FTP.php on line 33, referer: http://...../administrator/index.php

i fix it in
/libraries/FTP.php line 34:
require_once 'PEAR.php'; ---> require_once dirname(FILE).DS.'PEAR.php';