It doesn�t work lazy loading with remote client (toplink)

I am trying to use lazy loading in a @ManyToOne field but I get an exception. I have been reading in some oracle tutorials that it's necesary use -javaagent:.../lib/toplink-essentials-agent.jar for that it works because this argument activate dynamic weaving in JavaSE. I have put this command line argument javaagent but it doesn't work. Why? Can I have to do another thing? I have done a lot of tests in base to comments read in another forums but I only obtains an exception.
Caused by: java.io.IOException: Mismatched serialization UIDs
NOTE: The server use toplink and the remote client query the entitties through a session bean of the server. Besides, I am using Glassfish (Sun application server and toplink).
Thanks in advance.
hayken

At first, thank you for your reply.
I know that I haven´t explained the problem too well. I have a stateless bean with one remote method that execute a query an returns an entity like this
@Entity
public class ModuloEntity extends Serializable
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long idModulo;
private String nombre;
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="IdProyecto")
private ProyectoEntity proyecto;
The remote client invoke this method and in that moment I get this exception.
21-may-2007 18:55:48 com.sun.corba.ee.impl.encoding.CDRInputStream_1_0 read_value
ADVERTENCIA: "IOP00810211: (MARSHAL) Exception from readValue on ValueHandler in CDRInputStream"
org.omg.CORBA.MARSHAL: vmcid: SUN minor code: 211 completed: Maybe
at com.sun.corba.ee.impl.logging.ORBUtilSystemException.valuehandlerReadException(ORBUtilSystemException.java:7053)
Caused by: java.io.IOException: Mismatched serialization UIDs : Source (Rep. IDRMI:com.syskonic.gesplan.entities.ModuloEntity:6D06A8C14D488FFF:8E6FC8687EA9E512) = 8E6FC8687EA9E512 whereas Target (Rep. ID RMI:com.syskonic.gesplan.entities.ModuloEntity:1C6925798CDFD3DF:3455DBF4457AE337) = 3455DBF4457AE337
at com.sun.corba.ee.impl.util.RepositoryId.useFullValueDescription(RepositoryId.java:573)
If I look the server log, I can see that the call has not been produced, it doesn´t show any exception. It looks that the object managed by the server and the remote client aren´t the same and the corba service doesn´t work when remote client call session method. If I change the ModuloEntity and remove the fetch attribute then all this process executes correctly. The problem is in this attribute.
NOTE: I am using the javaagent command line argument.
Hayken

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    pSL1=new PSList<PSol>(bkStack.pop());Again - to my understanding (which comes from old days of microprocessor coding... - there shouldn't be a need to know how the data came there, or what was the name of the variable who stored it there. And  : the implementation of ArrayDeque returns 'elements' of class E, not references !
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    Might make our discussion much easier, to see how things REALLY work.
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

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