java.lang.NullPointerException
        at java.awt.Container.removeNotify(Container.java:2673)
        at javax.swing.JComponent.removeNotify(JComponent.java:4729)
        at java.awt.Container.removeNotify(Container.java:2672)
        at javax.swing.JComponent.removeNotify(JComponent.java:4729)
        at javax.swing.JRootPane.removeNotify(JRootPane.java:758)
        at java.awt.Container.removeNotify(Container.java:2672)
        at java.awt.Window.removeNotify(Window.java:682)
        at org.netbeans.core.windows.services.NbPresenter.removeNotify(NbPresenter.java:346)
        at java.awt.Window$1DisposeAction.run(Window.java:1049)
        at java.awt.Window.doDispose(Window.java:1061)
        at java.awt.Dialog.doDispose(Dialog.java:1273)
        at java.awt.Window.dispose(Window.java:1008)
        at org.netbeans.modules.search.SearchPanel.doClose(SearchPanel.java:378)
        at org.netbeans.modules.search.SearchPanel.actionPerformed(SearchPanel.java:258)
        at org.netbeans.core.windows.services.NbPresenter$ButtonListener.actionPerformed(NbPresenter.java:1132)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2015)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2338)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:356)
        at org.netbeans.modules.search.BasicSearchForm.keyPressed(BasicSearchForm.java:645)
        at java.awt.Component.processKeyEvent(Component.java:6089)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2816)
        at java.awt.Component.processEvent(Component.java:5908)
        at java.awt.Container.processEvent(Container.java:2101)
        at java.awt.Component.dispatchEventImpl(Component.java:4491)
        at java.awt.Container.dispatchEventImpl(Container.java:2159)
        at java.awt.Component.dispatchEvent(Component.java:4317)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1879)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:750)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1015)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:887)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:714)
        at java.awt.Component.dispatchEventImpl(Component.java:4361)
        at java.awt.Container.dispatchEventImpl(Container.java:2159)
        at java.awt.Window.dispatchEventImpl(Window.java:2559)
        at java.awt.Component.dispatchEvent(Component.java:4317)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:194)
        at java.awt.Dialog$1.run(Dialog.java:1072)
        at java.awt.Dialog$3.run(Dialog.java:1126)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.awt.Dialog.show(Dialog.java:1124)
        at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:863)
        at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:897)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:885)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:109)
        at org.openide.util.Mutex.doEventAccess(Mutex.java:1355)
        at org.openide.util.Mutex.readAccess(Mutex.java:268)
        at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:870)
        at java.awt.Component.show(Component.java:1469)
        at java.awt.Component.setVisible(Component.java:1421)
        at java.awt.Window.setVisible(Window.java:875)
        at java.awt.Dialog.setVisible(Dialog.java:1011)
        at org.netbeans.modules.search.SearchPanel.showDialog(SearchPanel.java:411)
        at org.netbeans.modules.search.ResultView.customizeCriteria(ResultView.java:1141)
        at org.netbeans.modules.search.ResultView.access$400(ResultView.java:91)
        at org.netbeans.modules.search.ResultView$ButtonListener.actionPerformed(ResultView.java:1261)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2015)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2338)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:253)
        at java.awt.Component.processMouseEvent(Component.java:6131)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3293)
        at java.awt.Component.processEvent(Component.java:5896)
        at java.awt.Container.processEvent(Container.java:2101)
        at java.awt.Component.dispatchEventImpl(Component.java:4491)
        at java.awt.Container.dispatchEventImpl(Container.java:2159)
        at java.awt.Component.dispatchEvent(Component.java:4317)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4595)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4258)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4188)
        at java.awt.Container.dispatchEventImpl(Container.java:2145)
        at java.awt.Window.dispatchEventImpl(Window.java:2559)
        at java.awt.Component.dispatchEvent(Component.java:4317)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)