Java Application Framework/GUI Editor

Atris version 1.0.8
I have the following error trying tutorial:

java.lang.NullPointerException
java.lang.NullPointerException
at java.awt.Container.addImpl(Unknown Source)
at java.awt.Container.add(Unknown Source)
at Atris.CommonUI.AtrisMDIFrame.MyConstructor(AtrisMDIFrame.java:853)
at Atris.CommonUI.AtrisMDIFrame.<init>(AtrisMDIFrame.java:118)
at Atris.CommonUI.AtrisApplication.Start(AtrisApplication.java:1657)
at MyMain.main(MyMain.java:10)


First file MyApplication.java:

import Atris.Common.*;
import Atris.CommonUI.*;
public class MyApplication extends AtrisApplication
{
public void OnInitialize()
{
this.setRoot("\\AtrisDemo");
this.setApplicationName("MyApplication");
this.setLogin(false);
}
}

Second file MyMain.java:

import Atris.Common.*;
import Atris.CommonUI.*;
public class MyMain
{
public static void main(String[] args)
{
try
{
MyApplication theApp = new MyApplication();
theApp.Start();
}
catch(Exception e)
{
System.out.println(e.toString());
e.printStackTrace();
}
}
}


Sun jdk1.5.0, Win98SE.
AtrisXMLEditor works nice.