java.lang.AssertionError
        at org.netbeans.modules.quickfilechooser.ChooserComponentUI$CompleteAction.actionPerformed(ChooserComponentUI.java:380)
        at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1633)
        at javax.swing.JComponent.processKeyBinding(JComponent.java:2869)
        at javax.swing.JComponent.processKeyBindings(JComponent.java:2904)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2832)
        at java.awt.Component.processEvent(Component.java:5732)
        at java.awt.Container.processEvent(Container.java:1960)
        at java.awt.Component.dispatchEventImpl(Component.java:4365)
        at java.awt.Container.dispatchEventImpl(Container.java:2018)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1828)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:693)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:950)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:822)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:657)
        at java.awt.Component.dispatchEventImpl(Component.java:4237)
        at java.awt.Container.dispatchEventImpl(Container.java:2018)
        at java.awt.Window.dispatchEventImpl(Window.java:2210)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
        at java.awt.Dialog$1.run(Dialog.java:1032)
        at java.awt.Dialog$2.run(Dialog.java:1078)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Dialog.show(Dialog.java:1076)
        at javax.swing.JFileChooser.showDialog(JFileChooser.java:718)
        at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:621)
        at org.netbeans.modules.project.ui.actions.OpenProject.actionPerformed(OpenProject.java:57)
        at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:849)
        at javax.swing.JComponent.processKeyBindings(JComponent.java:2915)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2832)
        at java.awt.Component.processEvent(Component.java:5732)
        at java.awt.Container.processEvent(Container.java:1960)
        at java.awt.Component.dispatchEventImpl(Component.java:4365)
        at java.awt.Container.dispatchEventImpl(Container.java:2018)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1828)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:693)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:950)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:822)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:657)
        at java.awt.Component.dispatchEventImpl(Component.java:4237)
        at java.awt.Container.dispatchEventImpl(Container.java:2018)
        at java.awt.Window.dispatchEventImpl(Window.java:2210)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)