A patch from Praveen Agrawal "Implementing Try-Catch while Adding UiLabel Resources" https://issues.apache.org/jira/browse/OFBIZ-5119 In OrderServices.java in method 'sendOrderNotificationScreen (Line :2427) a try catch block must be there surrounding to Adding UiLabel resources to map. So that if any of the resource is not found then rest of the code does not fail.
ofbiz/branches/release10.04/applications/order/src/org/ofbiz/order/order/OrderServices.java