WSDL Error : Difficult in reading one record from server

Hi,

I have an issue with WSDL. i have imported the wsdl and getting the results in flex. Now when i am trying to import only one record from wsdl its throwing an error. Please any help is appreciable.

TypeError: Error #1009: Cannot access a property or method of a null object reference.
    at Components::References/ResultHandler()
    at Components::References/__lawPadServicesDAOPort_result()
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at com.adobe.fiber.services.wrapper::AbstractServiceWrapper/http://www.adobe.com/2008/flex/model/internal::propagateEvents()
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at mx.rpc::AbstractService/dispatchEvent()
    at mx.rpc.soap.mxml::WebService/dispatchEvent()
    at mx.rpc::AbstractOperation/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()
    at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::resultHandler()
    at mx.rpc::Responder/result()
    at mx.rpc::AsyncRequest/acknowledge()
    at DirectHTTPMessageResponder/completeHandler()
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at flash.net::URLLoader/onComplete()

Thanks and Regards,

Pradeep