java.lang.NullPointerException
        at sun.font.FontDesignMetrics.stringWidth(FontDesignMetrics.java:280)
        at com.sun.java.swing.SwingUtilities2.stringWidth(SwingUtilities2.java:300)
        at apple.laf.CUIAquaTabbedPaneCopyFromBasic.calculateTabWidth(CUIAquaTabbedPaneCopyFromBasic.java:1445)
        at apple.laf.CUIAquaTabbedPaneCopyFromBasic.calculateMaxTabWidth(CUIAquaTabbedPaneCopyFromBasic.java:1456)
        at apple.laf.CUIAquaTabbedPaneCopyFromBasic$TabbedPaneLayout.calculateSize(CUIAquaTabbedPaneCopyFromBasic.java:2017)
        at apple.laf.CUIAquaTabbedPaneCopyFromBasic$TabbedPaneLayout.minimumLayoutSize(CUIAquaTabbedPaneCopyFromBasic.java:1969)
        at java.awt.Container.minimumSize(Container.java:1598)
        at java.awt.Container.getMinimumSize(Container.java:1583)
        at javax.swing.JComponent.getMinimumSize(JComponent.java:1706)
        at javax.swing.OverlayLayout.checkRequests(OverlayLayout.java:236)
        at javax.swing.OverlayLayout.minimumLayoutSize(OverlayLayout.java:128)
        at java.awt.Container.minimumSize(Container.java:1598)
        at java.awt.Container.getMinimumSize(Container.java:1583)
        at javax.swing.JComponent.getMinimumSize(JComponent.java:1706)
        at java.awt.BorderLayout.minimumLayoutSize(BorderLayout.java:634)
        at java.awt.Container.minimumSize(Container.java:1598)
        at java.awt.Container.getMinimumSize(Container.java:1583)
        at javax.swing.JComponent.getMinimumSize(JComponent.java:1706)
        at org.netbeans.swing.tabcontrol.plaf.AbstractViewTabDisplayerUI.getMinimumSize(AbstractViewTabDisplayerUI.java:548)
        at org.netbeans.swing.tabcontrol.TabDisplayer.getMinimumSize(TabDisplayer.java:402)
        at java.awt.BorderLayout.minimumLayoutSize(BorderLayout.java:639)
        at java.awt.Container.minimumSize(Container.java:1598)
        at java.awt.Container.getMinimumSize(Container.java:1583)
        at javax.swing.JComponent.getMinimumSize(JComponent.java:1706)
        at java.awt.BorderLayout.minimumLayoutSize(BorderLayout.java:634)
        at java.awt.Container.minimumSize(Container.java:1598)
        at java.awt.Container.getMinimumSize(Container.java:1583)
        at javax.swing.JComponent.getMinimumSize(JComponent.java:1706)
        at org.netbeans.core.windows.view.ui.MultiSplitCell.getMinimumSize(MultiSplitCell.java:113)
        at org.netbeans.core.windows.view.ui.MultiSplitPane.getMinimumSize(MultiSplitPane.java:229)
        at org.netbeans.core.windows.view.ui.MultiSplitCell.getMinimumSize(MultiSplitCell.java:115)
        at org.netbeans.core.windows.view.ui.MultiSplitPane.getMinimumSize(MultiSplitPane.java:229)
        at org.netbeans.core.windows.view.ui.MultiSplitCell.getMinimumSize(MultiSplitCell.java:113)
        at org.netbeans.core.windows.view.ui.MultiSplitPane.getMinimumSize(MultiSplitPane.java:229)
        at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:913)
        at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:816)
        at java.awt.GridBagLayout.ArrangeGrid(GridBagLayout.java:1416)
        at java.awt.GridBagLayout.ArrangeGrid(GridBagLayout.java:1372)
        at java.awt.GridBagLayout.layoutContainer(GridBagLayout.java:712)
        at java.awt.Container.layout(Container.java:1401)
        at java.awt.Container.doLayout(Container.java:1390)
        at java.awt.Container.validateTree(Container.java:1473)
        at java.awt.Container.validate(Container.java:1448)
        at org.netbeans.core.windows.view.ui.DesktopImpl$LayeredLayout.layoutContainer(DesktopImpl.java:466)
        at java.awt.Container.layout(Container.java:1401)
        at java.awt.Container.doLayout(Container.java:1390)
        at java.awt.Container.validateTree(Container.java:1473)
        at java.awt.Container.validateTree(Container.java:1480)
        at java.awt.Container.validateTree(Container.java:1480)
        at java.awt.Container.validateTree(Container.java:1480)
        at java.awt.Container.validateTree(Container.java:1480)
        at java.awt.Container.validate(Container.java:1448)
        at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:117)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)