NetBeans 6 - пример созда ния приложения для работы с базой данн ых

Добрый день!

При выполнении примера получаю следующие ошибки

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException
         at java.lang.Class.cast(Class.java:2990)
         at org.jdesktop.beansbinding.Binding.convertForward(Binding.java:1312)
         at 
org.jdesktop.beansbinding.Binding.getSourceValueForTarget(Binding.java:844)
         at org.jdesktop.beansbinding.Binding.refreshUnmanaged(Binding.java:1222)
         at org.jdesktop.beansbinding.Binding.refresh(Binding.java:1207)
         at 
org.jdesktop.beansbinding.AutoBinding.tryRefreshThenSave(AutoBinding.java:162)
         at 
org.jdesktop.beansbinding.AutoBinding.sourceChangedImpl(AutoBinding.java:227)
         at org.jdesktop.beansbinding.Binding.sourceChanged(Binding.java:1411)
         at org.jdesktop.beansbinding.Binding.access$1200(Binding.java:38)
         at 
org.jdesktop.beansbinding.Binding$PSL.propertyStateChanged(Binding.java:1618)
         at 
org.jdesktop.beansbinding.PropertyHelper.firePropertyStateChange(PropertyHelper.java:212)
         at 
org.jdesktop.beansbinding.ELProperty.notifyListeners(ELProperty.java:688)
         at org.jdesktop.beansbinding.ELProperty.access$800(ELProperty.java:155)
         at 
org.jdesktop.beansbinding.ELProperty$SourceEntry.processSourceChanged(ELProperty.java:312)
         at 
org.jdesktop.beansbinding.ELProperty$SourceEntry.sourceChanged(ELProperty.java:326)
         at 
org.jdesktop.beansbinding.ELProperty$SourceEntry.propertyChange(ELProperty.java:333)
         at 
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
         at 
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
         at 
org.jdesktop.swingbinding.adapters.BeanAdapterBase.firePropertyChange(BeanAdapterBase.java:112)
         at 
org.jdesktop.swingbinding.adapters.JTableAdapterProvider$Adapter$Handler.tableSelectionChanged(JTableAdapterProvider.java:81)
         at 
org.jdesktop.swingbinding.adapters.JTableAdapterProvider$Adapter$Handler.valueChanged(JTableAdapterProvider.java:91)
         at 
javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:167)
         at 
javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:147)
         at 
javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:194)
         at 
javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:388)
         at 
javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:398)
         at 
javax.swing.DefaultListSelectionModel.setSelectionInterval(DefaultListSelectionModel.java:442)
         at javax.swing.JTable.changeSelectionModel(JTable.java:2312)
         at javax.swing.JTable.changeSelection(JTable.java:2377)
         at 
javax.swing.plaf.basic.BasicTableUI$Handler.adjustSelection(BasicTableUI.java:1091)
         at 
javax.swing.plaf.basic.BasicTableUI$Handler.mousePressed(BasicTableUI.java:1014)
         at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
         at java.awt.Component.processMouseEvent(Component.java:6035)
         at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
         at java.awt.Component.processEvent(Component.java:5803)
         at java.awt.Container.processEvent(Container.java:2058)
         at java.awt.Component.dispatchEventImpl(Component.java:4410)
         at java.awt.Container.dispatchEventImpl(Container.java:2116)
         at java.awt.Component.dispatchEvent(Component.java:4240)
         at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
         at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3983)
         at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
         at java.awt.Container.dispatchEventImpl(Container.java:2102)
         at java.awt.Window.dispatchEventImpl(Window.java:2429)
         at java.awt.Component.dispatchEvent(Component.java:4240)
         at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
         at 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
         at 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
         at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
         at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)


Подскажите - где искать саму ошибку?
Сам пример запускается, но не совсем правильно работает.

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Олег