java.lang.AssertionError: /.. at org.netbeans.modules.masterfs.MasterFileObject.getFileObject(MasterFileObject.java:267) at org.openide.filesystems.FileObject.getFileObject(FileObject.java:555) at org.netbeans.modules.masterfs.MasterFileSystem.getStepByStep(MasterFileSystem.java:111) at org.netbeans.modules.masterfs.MasterFileSystem.findResource(MasterFileSystem.java:98) at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:52) at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:158) at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:314) at org.netbeans.modules.project.ui.ProjectChooserAccessory.convertToValidDir(ProjectChooserAccessory.java:241) at org.netbeans.modules.project.ui.ProjectChooserAccessory.isProjectDir(ProjectChooserAccessory.java:217) at org.netbeans.modules.project.ui.ProjectChooserAccessory.access$200(ProjectChooserAccessory.java:48) at org.netbeans.modules.project.ui.ProjectChooserAccessory$ProjectFileView.getIcon(ProjectChooserAccessory.java:466) at javax.swing.JFileChooser.getIcon(JFileChooser.java:1527) at com.sun.java.swing.plaf.gtk.GTKFileChooserUI$DirectoryCellRenderer.getListCellRendererComponent(GTKFileChooserUI.java:952) at javax.swing.plaf.basic.BasicListUI.updateLayoutState(BasicListUI.java:1134) at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(BasicListUI.java:1084) at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:234) at javax.swing.plaf.synth.SynthListUI.update(SynthListUI.java:52) at javax.swing.JComponent.paintComponent(JComponent.java:740) at javax.swing.JComponent.paint(JComponent.java:1003) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JViewport.paint(JViewport.java:728) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JSplitPane.paintChildren(JSplitPane.java:1021) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paint(JComponent.java:1012) at javax.swing.JLayeredPane.paint(JLayeredPane.java:559) at javax.swing.JComponent.paintChildren(JComponent.java:840) at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4937) at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4883) at javax.swing.JComponent.paint(JComponent.java:993) at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21) at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60) at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97) at java.awt.Container.paint(Container.java:1709) at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248) at sun.awt.X11.XRepaintArea.paintComponent(XRepaintArea.java:56) at sun.awt.RepaintArea.paint(RepaintArea.java:224) at sun.awt.X11.XComponentPeer.handleEvent(XComponentPeer.java:632) at java.awt.Component.dispatchEventImpl(Component.java:4029) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Window.dispatchEventImpl(Window.java:1766) at java.awt.Component.dispatchEvent(Component.java:3801) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:515) at java.awt.Dialog.show(Dialog.java:536) at javax.swing.JFileChooser.showDialog(JFileChooser.java:717) at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:620) at org.netbeans.modules.project.ui.actions.OpenProject.actionPerformed(OpenProject.java:54) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$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.AbstractButton.doClick(AbstractButton.java:282) at javax.swing.plaf.basic.BasicMenuItemUI$Actions.actionPerformed(BasicMenuItemUI.java:969) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1571) at javax.swing.JComponent.processKeyBinding(JComponent.java:2730) at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:656) at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:664) at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:664) at javax.swing.JMenuBar.processKeyBinding(JMenuBar.java:640) at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:255) at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:242) at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2807) at javax.swing.SwingUtilities.processKeyBindings(SwingUtilities.java:1488) at javax.swing.UIManager$2.postProcessKeyEvent(UIManager.java:1283) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:678) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:916) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:794) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:632) at java.awt.Component.dispatchEventImpl(Component.java:3839) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Window.dispatchEventImpl(Window.java:1766) at java.awt.Component.dispatchEvent(Component.java:3801) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) 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)