java.lang.NullPointerException at org.netbeans.core.startup.preferences.NbPreferences.put(NbPreferences.java:105) at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl.storeDisplayName(UpdateUnitProviderImpl.java:259) at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl.setDisplayName(UpdateUnitProviderImpl.java:78) at org.netbeans.api.autoupdate.UpdateUnitProvider.setDisplayName(UpdateUnitProvider.java:65) at org.netbeans.modules.autoupdate.ui.SettingsTab.setData(SettingsTab.java:298) at org.netbeans.modules.autoupdate.ui.SettingsTab.access$700(SettingsTab.java:49) at org.netbeans.modules.autoupdate.ui.SettingsTab$6.actionPerformed(SettingsTab.java:236) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:5501) at javax.swing.JComponent.processMouseEvent(JComponent.java:3135) at java.awt.Component.processEvent(Component.java:5266) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3968) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1778) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:525) at java.awt.Dialog$2.run(Dialog.java:553) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:551) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:810) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:844) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:832) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:81) at org.openide.util.Mutex.doEventAccess(Mutex.java:1201) at org.openide.util.Mutex.readAccess(Mutex.java:220) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:817) at java.awt.Component.show(Component.java:1300) at java.awt.Component.setVisible(Component.java:1253) at org.netbeans.modules.autoupdate.ui.SettingsTab.bEditActionPerformed(SettingsTab.java:242) at org.netbeans.modules.autoupdate.ui.SettingsTab.access$300(SettingsTab.java:49) at org.netbeans.modules.autoupdate.ui.SettingsTab$2.actionPerformed(SettingsTab.java:139) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:5501) at javax.swing.JComponent.processMouseEvent(JComponent.java:3135) at java.awt.Component.processEvent(Component.java:5266) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3968) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1778) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:525) at java.awt.Dialog$2.run(Dialog.java:553) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:551) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:810) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:844) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:832) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:81) at org.openide.util.Mutex.doEventAccess(Mutex.java:1201) at org.openide.util.Mutex.readAccess(Mutex.java:220) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:817) at java.awt.Component.show(Component.java:1300) at java.awt.Component.setVisible(Component.java:1253) at org.netbeans.modules.autoupdate.ui.actions.PluginManagerAction.performAction(PluginManagerAction.java:49) at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:96) at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:55) at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:92) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.AbstractButton.doClick(AbstractButton.java:302) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041) at java.awt.Component.processMouseEvent(Component.java:5501) at javax.swing.JComponent.processMouseEvent(JComponent.java:3135) at java.awt.Component.processEvent(Component.java:5266) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3968) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1778) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)