adsmenager wyżuca błąd

[joomolek]

mam taki komunikat, po zainstalowaniu w ustawieniu: adsmenagera/configuration/fields :
Warning: require_once(/administrator/includes/pageNavigation.php) [function.require-once]: failed to open stream: No such file or directory in /administrator/components/com_adsmanager/admin.adsmanager.php on line 1524

Fatal error: require_once() [function.require]: Failed opening required '/administrator/includes/pageNavigation.php' (include_path='.:/:/usr/local/php/pear5') in /administrator/components/com_adsmanager/admin.adsmanager.php on line 1524

oraz w ustawieniu adsmenagera/configuration/categories :

Warning: require_once(/administrator/includes/pageNavigation.php) [function.require-once]: failed to open stream: No such file or directory in /administrator/components/com_adsmanager/admin.adsmanager.php on line 674

Fatal error: require_once() [function.require]: Failed opening required '/administrator/includes/pageNavigation.php' (include_path='.:/:/usr/local/php/pear5') in /administrator/components/com_adsmanager/admin.adsmanager.php on line 674
pozostałe kolumny ok. pomocy!:joomolek(