java.lang.NullPointerException
   at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.prepareContent(SettingsTab.java:468)
   at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.modelOrSelectionChanged(SettingsTab.java:486)
   at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.valueChanged(SettingsTab.java:434)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:167)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:147)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:194)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:388)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:398)
   at javax.swing.DefaultListSelectionModel.setSelectionInterval(DefaultListSelectionModel.java:442)
   at org.netbeans.modules.autoupdate.ui.SettingsTab$1.run(SettingsTab.java:209)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.netbeans.modules.autoupdate.ui.Utilities.startAsWorkerThread(Utilities.java:725)
   at org.netbeans.modules.autoupdate.ui.Utilities.startAsWorkerThread(Utilities.java:710)
   at org.netbeans.modules.autoupdate.ui.SettingsTab.addNotify(SettingsTab.java:204)
   at java.awt.Container.addImpl(Container.java:1066)
   at javax.swing.JTabbedPane.insertTab(JTabbedPane.java:703)
   at javax.swing.JTabbedPane.add(JTabbedPane.java:837)
   at org.netbeans.modules.autoupdate.ui.PluginManagerUI.postInitComponents(PluginManagerUI.java:522)
   at org.netbeans.modules.autoupdate.ui.PluginManagerUI.access$000(PluginManagerUI.java:79)
   at org.netbeans.modules.autoupdate.ui.PluginManagerUI$1.run(PluginManagerUI.java:132)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1495)
   at org.netbeans.modules.autoupdate.ui.Utilities.startAsWorkerThread(Utilities.java:716)
   at org.netbeans.modules.autoupdate.ui.Utilities.startAsWorkerThread(Utilities.java:710)
   at org.netbeans.modules.autoupdate.ui.PluginManagerUI.<init>(PluginManagerUI.java:129)
   at org.netbeans.modules.autoupdate.ui.PluginManagerUI.<init>(PluginManagerUI.java:109)
   at org.netbeans.modules.autoupdate.ui.actions.PluginManagerAction.actionPerformed(PluginManagerAction.java:81)
   at org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:198)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:201)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
   at com.apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:95)
   at java.awt.MenuItem.processActionEvent(MenuItem.java:650)
   at java.awt.MenuItem.processEvent(MenuItem.java:609)
   at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:343)
   at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:331)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
   at java.awt.EventQueue.access$400(EventQueue.java:82)
   at java.awt.EventQueue$2.run(EventQueue.java:663)
   at java.awt.EventQueue$2.run(EventQueue.java:661)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
   at java.awt.EventQueue$3.run(EventQueue.java:677)
   at java.awt.EventQueue$3.run(EventQueue.java:675)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:674)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)