java.lang.NullPointerException
        at de.hunsicker.jalopy.swing.SettingsContainer.trackPanel(SettingsContainer.java:714)
        at de.hunsicker.jalopy.swing.SettingsContainer.dispose(SettingsContainer.java:130)
        at de.hunsicker.jalopy.swing.SettingsDialog$2.windowClosing(SettingsDialog.java:538)
        at java.awt.Window.processWindowEvent(Window.java:1862)
        at javax.swing.JDialog.processWindowEvent(JDialog.java:633)
        at java.awt.Window.processEvent(Window.java:1820)
        at java.awt.Component.dispatchEventImpl(Component.java:4583)
        at java.awt.Container.dispatchEventImpl(Container.java:2099)
        at java.awt.Window.dispatchEventImpl(Window.java:2475)
        at java.awt.Component.dispatchEvent(Component.java:4413)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)