Помогите решать ошибку с PEAR

Warning: require_once(./__swift/config/config.php) [function.require-once]: failed to open stream: No such file or directory in D:\OpenServer\domains\localhost\set__swift\library\class.SWIFT.php on line 161

Fatal error: require_once() [function.require]: Failed opening required './__swift/config/config.php' (include_path='.;d:/openserver/modules/php/PHP-5.3;d:/openserver/modules/php/PHP-5.3/PEAR/pear') in D:\OpenServer\domains\localhost\set__swift\library\class.SWIFT.php on line 161