running problem

[Tiago Simas]

Hi, I have the following problem:
I'm running swarm in JavaBuilder 6. I have debugged my program and it's
ok! then I run it, and when it reaches the line

Globals.env.setComponentWindowGeometryRecordName(topLevelAgents,"topLevelAgents");

Appears the following error:

*** event raised for error: InvalidArgument

*** function: nil_method(), file: /src/Swarm/swarm/src/defobj/internal.m,
line: 1349

The message `setWindowGeometryRecordNameForComponent:widget:' was sent to
nil.

*** execution terminating due to error

/src/Swarm/swarm/src/defobj/Symbol.m:173 -[Error(c)
_raiseEvent:]

      0 [sig] javaw 1000 stackdump: Dumping
stack trace to javaw.exe.stackdump


My StartAgents program is:


package simpleagent;

import swarm.Globals;
import swarm.defobj.Zone;

public class StartAgents
{
  public static void main(String[] args)
  {
    AgentObserver topLevelAgents;

   
Globals.env.initSwarm("SimpleAgent","1.0","address@hidden",args);
    if (Globals.env.guiFlag)
    {
      topLevelAgents = new
AgentObserver(Globals.env.globalZone);

     
Globals.env.setComponentWindowGeometryRecordName(topLevelAgents,"topLevelAgents");

      topLevelAgents.buildObjects();
      topLevelAgents.buildActions();
      topLevelAgents.activateIn(null);
      topLevelAgents.go();
      topLevelAgents.drop();
    }
  }
}  

Could someone Help me!
Cheers,
Tiago.