java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at javax.swing.border.EmptyBorder.(EmptyBorder.java:54)
at com.sun.java.swing.plaf.windows.WindowsTableHeaderUI$XPDefaultRenderer.getTableCellRendererComponent(WindowsTableHeaderUI.java:63)
at javax.swing.plaf.basic.BasicTableHeaderUI.getHeaderRenderer(BasicTableHeaderUI.java:394)
at javax.swing.plaf.basic.BasicTableHeaderUI.getHeaderHeight(BasicTableHeaderUI.java:428)
at javax.swing.plaf.basic.BasicTableHeaderUI.createHeaderSize(BasicTableHeaderUI.java:454)
at javax.swing.plaf.basic.BasicTableHeaderUI.getPreferredSize(BasicTableHeaderUI.java:485)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1275)
at javax.swing.ViewportLayout.preferredLayoutSize(ViewportLayout.java:75)
at java.awt.Container.preferredSize(Container.java:1178)
at java.awt.Container.getPreferredSize(Container.java:1162)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1277)
at javax.swing.ScrollPaneLayout.preferredLayoutSize(ScrollPaneLayout.java:507)
at java.awt.Container.preferredSize(Container.java:1178)
at java.awt.Container.getPreferredSize(Container.java:1162)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1277)
at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:892)
at java.awt.GridBagLayout.getLayoutInfo(GridBagLayout.java:806)
at java.awt.GridBagLayout.preferredLayoutSize(GridBagLayout.java:630)
at java.awt.Container.preferredSize(Container.java:1178)
at java.awt.Container.getPreferredSize(Container.java:1162)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1277)
at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:892)
at java.awt.GridBagLayout.getLayoutInfo(GridBagLayout.java:806)
at java.awt.GridBagLayout.ArrangeGrid(GridBagLayout.java:1374)
at java.awt.GridBagLayout.arrangeGrid(GridBagLayout.java:1337)
at java.awt.GridBagLayout.layoutContainer(GridBagLayout.java:706)
at java.awt.Container.layout(Container.java:1020)
at java.awt.Container.doLayout(Container.java:1010)
at java.awt.Container.validateTree(Container.java:1092)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validateTree(Container.java:1099)
at java.awt.Container.validate(Container.java:1067)
at java.awt.Window.pack(Window.java:444)
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.invokeASWizard(JdxMenuManager.java:697)
at oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeAssociationWizard(JdxMenuManager.java:663)
at oracle.jbo.dt.ui.main.DtuMenuManager.doMenuAction(DtuMenuManager.java:890)
at oracle.jbo.dt.jdevx.ui.JdxMenuManager.doMenuAction(JdxMenuManager.java:533)
at oracle.jbo.dt.ui.main.DtuMenuManager.doAction(DtuMenuManager.java:838)
at oracle.jbo.dt.ui.main.DtuMenuManager.doAction(DtuMenuManager.java:823)
at oracle.jbo.dt.jdevx.ui.JdxMenuManager.doActionPerformed(JdxMenuManager.java:391)
at oracle.jbo.dt.jdevx.ui.JdxMenuInvoker.run(JdxMenuManager.java:1076)
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)

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