Hi, please give me help with this problem, i dont know what is the solution

I have this simple session bean deploy in a jboss 4.0.5 GA application server

My interface:

package server.ejb.usuarios;

import javax.ejb.Remote;

@Remote
public interface Prueba {
 public void getError() throws Exception;
}

My Session bean implementation:

package server.ejb.usuarios;

import javax.ejb.Stateless;
import server.ejb.usuarios.Prueba;

public @Stateless class PruebaBean implements Prueba {

 public void getError() throws Exception {
 throw new Exception("Mensaje de error");
 }

}

Simple, i can deploy this bean on my application server, now i have this client code:

package clientold;

import java.util.Properties;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import server.ejb.usuarios.Prueba;

public class MainPruebaError {

 /**
 * @param args
 */
 public static void main(String[] args) {
 Context ctx;
 try {
 ctx = getInitialContext();
 Prueba pruebaSession = (Prueba) ctx.lookup("PruebaBean/remote");
 pruebaSession.getError();
 } catch (NamingException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch(Exception e){
 System.out.println("Get error from server: " + e.getMessage());
 e.printStackTrace();
 }
 }

 private static Context getInitialContext() throws NamingException {
 Properties prop = new Properties();
 prop.setProperty("java.naming.factory.initial",
 "org.jnp.interfaces.NamingContextFactory");
 prop.setProperty("java.naming.provider.url", "127.0.0.1:1099");
 prop.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");

 return (new InitialContext(prop));
 }
}

and my client catch the exception but i can´t get the correct exception message. I need pass custom message from my server to my clients and wrap it in a exception, but when i run this example got the next output:

Get error from server: [Ljava.lang.StackTraceElement;
java.lang.ClassNotFoundException: [Ljava.lang.StackTraceElement;
 at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:50)
 at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveClass(ObjectInputStreamWithClassLoader.java:139)
 at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
 at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
 at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1624)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945)
 at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869)
 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945)
 at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869)
 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
 at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
 at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:128)
 at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:66)
 at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:279)
 at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:143)
 at org.jboss.remoting.Client.invoke(Client.java:525)
 at org.jboss.remoting.Client.invoke(Client.java:488)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:46)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:40)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:77)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102)
 at $Proxy0.getError(Unknown Source)
 at clientold.MainPruebaError.main(MainPruebaError.java:21)

What is the problem??, i must see on the output

Get error from server: Mensaje de error

but i have :

Get error from server: [Ljava.lang.StackTraceElement;

why???, is only a simple application exception and don,t work, somebody can help me??

i have tried to use an interceptor class for get the exceptions and work, but without interceptor, dont work

thanks