Warning: session_set_save_handler() [function.session-set-save-handler]: Argument 1 is not a valid callback in /web/home/newchurch/html/zbxe/classes/context/Context.class.php on line 83

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /web/home/newchurch/html/zbxe/classes/context/Context.class.php:83) in /web/home/newchurch/html/zbxe/classes/context/Context.class.php on line 84

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /web/home/newchurch/html/zbxe/classes/context/Context.class.php:83) in /web/home/newchurch/html/zbxe/classes/context/Context.class.php on line 84

Fatal error: Call to a member function getModuleActionXml() on a non-object in /web/home/newchurch/html/zbxe/classes/module/ModuleHandler.class.php on line 156

아예 다시 깔았는데 이제 접속하려니 이런 에러가 납니다.
어떻게 하면 될까요?