Hello I am getting an error message when you add a discount coupon on the invoice. follows the log of the error: Exception Am_Exception_InputError AdminUserPaymentsController->addInvoiceAction [ library/Am/Controller.php : 139 ] Am_Controller->_runAction [ library/Am/Controller.php : 116 ] Am_Controller->dispatch [ library/Zend/Controller/Dispatcher/Standard.php : 295 ] Zend_Controller_Dispatcher_Standard->dispatch [ library/Zend/Controller/Front.php : 954 ] Zend_Controller_Front->dispatch [ library/Am/App.php : 1682 ] Am_App->run [ index.php : 43 ] Amember Version: 4.2.14 thanks