java.lang.NullPointerException
        at javax.swing.filechooser.FileSystemView.getSystemIcon(FileSystemView.java:199)
        at org.openide.filesystems.FileUtil$NonCanonicalizingFileSystemView.getSystemIcon(FileUtil.java:1675)
        at org.netbeans.swing.dirchooser.DirectoryChooserUI$DirectoryChooserFileView.getIcon(DirectoryChooserUI.java:1526)
        at javax.swing.JFileChooser.getIcon(JFileChooser.java:1530)
        at org.netbeans.swing.dirchooser.DirectoryChooserUI$DirectoryTreeRenderer.getNodeIcon(DirectoryChooserUI.java:1730)
        at org.netbeans.swing.dirchooser.DirectoryChooserUI$DirectoryTreeRenderer.getTreeCellRendererComponent(DirectoryChooserUI.java:1718)
        at javax.swing.plaf.basic.BasicTreeUI.paintRow(BasicTreeUI.java:1413)
        at javax.swing.plaf.basic.BasicTreeUI.paint(BasicTreeUI.java:1203)
        at javax.swing.plaf.metal.MetalTreeUI.paint(MetalTreeUI.java:152)
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
        at javax.swing.JComponent.paintComponent(JComponent.java:743)
        at javax.swing.JComponent.paint(JComponent.java:1006)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JViewport.paint(JViewport.java:728)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:559)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4972)
        at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4925)
        at javax.swing.JComponent._paintImmediately(JComponent.java:4868)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4675)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:451)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:114)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
[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$2.run(Dialog.java:553)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Dialog.show(Dialog.java:551)
        at javax.swing.JFileChooser.showDialog(JFileChooser.java:717)
        at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:620)
        at org.netbeans.modules.project.ui.actions.OpenProject.actionPerformed(OpenProject.java:84)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
        at javax.swing.AbstractButton$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)