Zend Loader 在windows 2003 server下无效？

开始部署到服务器上测试了，不过居然出现：

exception 'Zend_Controller_Dispatcher_Exception' with message 'Cannot load controller class "IndexController" from file "IndexController.php" in directory "../Application/Default/Controllers"' in D:\Lib\Zend\Controller\Dispatcher\Standard.php:284 Stack trace: #0 D:\Lib\Zend\Controller\Dispatcher\Standard.php(207): Zend_Controller_Dispatcher_Standard->loadClass('IndexController') #1 D:\Lib\Zend\Controller\Front.php(911): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #2 D:\www\index.php(93): Zend_Controller_Front->dispatch() #3 {main}

而直接采用  require '../Application/Default/Controllers/IndexController.php' 则可以正确的加载文件，在我这里的Windows XP 上则运行一切良好