get error in plugin

I use this plugin on my other shop its working well but when i install it to other shop its gave me this error please help me out …

Fatal error : Uncaught exception ‚Enlight_Controller_Exception‘ with message ‚Controller „shopware.php“ not found‘ in /var/www/clients/client1/web33/web/engine/Library/Enlight/Controller/Dispatcher/Default.php:486 Stack trace: #0 /var/www/clients/client1/web33/web/engine/Library/Enlight/Controller/Front.php(226): Enlight_Controller_Dispatcher_Default->dispatch(Object(Enlight_Controller_Request_RequestHttp), Object(Enlight_Controller_Response_ResponseHttp)) #1 /var/www/clients/client1/web33/web/engine/Shopware/Kernel.php(153): Enlight_Controller_Front->dispatch() #2 /var/www/clients/client1/web33/web/vendor/symfony/http-kernel/HttpCache/HttpCache.php(492): Shopware\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #3 /var/www/clients/client1/web33/web/engine/Shopware/Components/HttpCache/AppCache.php(255): Symfony\Component\HttpKernel\HttpCache\HttpCache->forward(Object(Symfony\Component\HttpFoundation\Request), true, NULL) #4 /var/www/clients/client1/web33/web/vendor/symfony/http-kernel/HttpCache/Ht in /var/www/web/engine/Library/Enlight/Controller/Dispatcher/Default.php  on line  486
503 Service Unavailable
Fatal error : Undefined class constant ‚self::SELECT_WITHOUT_FROM_PART‘ in  /var/www/web/engine/Library/Zend/Db/Table/Abstract.php  on line  1016

Hi,

when does this error occur? Always or just on certain pages? Is it definetly related to your plugin or could it be a htaccess issue? Does your plugin create links / redirects / forwards of any kind?

Best regards

Daniel