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java.lang.NullPointerException: 	at oracle.jbo.dt.ui.view.VOAttributePanel.getFieldType(VOAttributePanel.java:687)	at oracle.jbo.dt.ui.view.VOAttributePanel.updateAttribute(VOAttributePanel.java:496)	at oracle.jbo.dt.ui.view.VOAttributePanel.leave(VOAttributePanel.java:234)	at oracle.jbo.dt.ui.view.VOEditAttributePanel.updateCurrentAttr(VOEditAttributePanel.java:256)	at oracle.jbo.dt.ui.view.VOEditAttributePanel.leave(VOEditAttributePanel.java:104)	at oracle.jbo.dt.ui.main.dlg.DtuWizard.wizardValidatePage(DtuWizard.java:1679)	at oracle.bali.ewt.wizard.WizardPage.processWizardValidateEvent(Unknown Source)	at oracle.bali.ewt.wizard.WizardPage.validatePage(Unknown Source)	at oracle.bali.ewt.wizard.BaseWizard.validateSelectedPage(Unknown Source)	at oracle.bali.ewt.wizard.BaseWizard.doNext(Unknown Source)	at oracle.bali.ewt.wizard.BaseWizard$Action.actionPerformed(Unknown Source)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)	at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)	at java.awt.Component.processMouseEvent(Component.java:5100)	at java.awt.Component.processEvent(Component.java:4897)	at java.awt.Container.processEvent(Container.java:1569)	at java.awt.Component.dispatchEventImpl(Component.java:3615)	at java.awt.Container.dispatchEventImpl(Container.java:1627)	at java.awt.Component.dispatchEvent(Component.java:3477)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)	at java.awt.Container.dispatchEventImpl(Container.java:1613)	at java.awt.Window.dispatchEventImpl(Window.java:1606)	at java.awt.Component.dispatchEvent(Component.java:3477)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:141)	at java.awt.Dialog$1.run(Dialog.java:540)	at java.awt.Dialog.show(Dialog.java:561)	at java.awt.Component.show(Component.java:1133)	at java.awt.Component.setVisible(Component.java:1088)	at oracle.bali.ewt.wizard.WizardDialog.runDialog(Unknown Source)	at oracle.jbo.dt.ui.main.dlg.DtuWizard.createBaliWizard(DtuWizard.java:330)	at oracle.jbo.dt.ui.main.dlg.DtuWizard.setVisible(DtuWizard.java:272)	at oracle.jbo.dt.ui.main.dlg.DtuWizard.showDialog(DtuWizard.java:254)	at oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeVOWizard(JdxMenuManager.java:616)	at oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeViewWizard(JdxMenuManager.java:608)	at oracle.jbo.dt.jdevx.ui.JdxVOAddin.invoke(JdxVOAddin.java:38)	at oracle.ide.WizardManager$1.run(WizardManager.java:450)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)