Exception in thread "AWT-EventQueue-0" java.nio.BufferOverflowException
        at java.nio.Buffer.nextPutIndex(Buffer.java:519)
        at java.nio.HeapByteBuffer.putShort(HeapByteBuffer.java:315)
        at pkp.twiddler.Cfg.write(Cfg.java:100)
        at pkp.twiddler.Cfg.write(Cfg.java:145)
        at pkp.twidlit.TwidlitMenu$CfgSaver.fileChosen(TwidlitMenu.java:742)
        at pkp.ui.SaveTextWindow.actionPerformed(SaveTextWindow.java:114)
        at pkp.twidlit.SaveChordsWindow.actionPerformed(SaveChordsWindow.java:44)
        at javax.swing.JFileChooser.fireActionPerformed(JFileChooser.java:1758)
        at javax.swing.JFileChooser.approveSelection(JFileChooser.java:1669)
        at javax.swing.plaf.basic.BasicFileChooserUI$ApproveSelectionAction.actionPerformed(BasicFileChooserUI.java:966)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
        at java.awt.Component.processMouseEvent(Component.java:6516)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3312)
        at java.awt.Component.processEvent(Component.java:6281)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4872)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4698)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2719)
        at java.awt.Component.dispatchEvent(Component.java:4698)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
        at java.awt.EventQueue.access$300(EventQueue.java:103)
        at java.awt.EventQueue$3.run(EventQueue.java:706)
        at java.awt.EventQueue$3.run(EventQueue.java:704)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:720)
        at java.awt.EventQueue$4.run(EventQueue.java:718)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
        at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
        at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
        at java.awt.Dialog.show(Dialog.java:1082)
        at javax.swing.JFileChooser.showDialog(JFileChooser.java:741)
        at javax.swing.JFileChooser.showSaveDialog(JFileChooser.java:664)
        at pkp.ui.SaveTextWindow.actionPerformed(SaveTextWindow.java:111)
        at pkp.twidlit.SaveChordsWindow.actionPerformed(SaveChordsWindow.java:44)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.Component.processMouseEvent(Component.java:6516)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3312)
        at java.awt.Component.processEvent(Component.java:6281)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4872)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4698)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2719)
        at java.awt.Component.dispatchEvent(Component.java:4698)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
        at java.awt.EventQueue.access$300(EventQueue.java:103)
        at java.awt.EventQueue$3.run(EventQueue.java:706)
        at java.awt.EventQueue$3.run(EventQueue.java:704)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:720)
        at java.awt.EventQueue$4.run(EventQueue.java:718)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)