zend 这个是什么错?该怎么解决

zend 这个是什么错?
The following error occurred:

exception 'Zend_Controller_Dispatcher_Exception' with message 'Invalid controller specified (add)' in D:\zendtest\library\Zend\Controller\Dispatcher\Standard.php:248 Stack trace: #0 D:\zendtest\library\Zend\Controller\Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #1 D:\zendtest\html\index.php(20): Zend_Controller_Front->dispatch() #2 {main}


新手这个是什么错误?

------解决方案--------------------
估计是版本不配套
------解决方案--------------------