jboss and web service with jax-rpc

Hello to everybody,

I have a problem:
I have create a web server with jboss e jax-rpc.
the server web is ok, and when I put this address in the browser

http://localhost:8080/MioWebServer/WebService?WSDL

I can see the xml page.

After I created an application client, with the file WSDL
http://localhost:8080/MioWebServer/WebService?WSDL and I wrote
this simple class:

-------------------------------------------------------------------------------
package javaapplication24;

import clientService.*;
import javax.xml.rpc.Stub;
/**
 *
 * @author admin
 */
public class Main {

    public static void main(String[] args) {
        try{
            Stub stub = creaProxy();
            stub._setProperty(javax.xml.rpc.Stub.ENDPOINT_ADDRESS_PROPERTY,"http://localhost:8080/MioWebServer/WebService");
            WebServiceSEI classe = (WebServiceSEI)stub;
            String saluto = classe.saluta("Gino");
            System.out.println(saluto);
        }catch(Exception ex){
            ex.printStackTrace();
        }
    }

    private static Stub creaProxy(){
        return (Stub)(new WebService_Impl().getWebServiceSEIPort());
    }
}
------------------------------------------------------------------------------------

when I compiling that, is all ok, but if I esecute the program I have this
error:

**** errore ****

run-single:
java.rmi.ServerException: Endpoint cannot handle requests in state: CREATED
        at
com.sun.xml.rpc.client.StreamingSender._raiseFault(StreamingSender.java:510)
        at
com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:307)
        at
clientService.WebServiceSEI_Stub.saluta(WebServiceSEI_Stub.java:69)
        at javaapplication24.Main.main(Main.java:26)
BUILD SUCCESSFUL (total time: 4 seconds)

***************

I'm working on that since two days, do you have soma idea for solving this
problem?
:-(