java.lang.AssertionError: Line view index is -1
   at org.netbeans.modules.editor.lib2.view.ViewUpdates.checkRebuild(ViewUpdates.java:418)
   at org.netbeans.modules.editor.lib2.view.ViewUpdates$FactoriesListener.viewFactoryChanged(ViewUpdates.java:452)
   at org.netbeans.modules.editor.lib2.view.EditorViewFactory.fireEvent(EditorViewFactory.java:194)
   at org.netbeans.modules.editor.lib2.view.HighlightsViewFactory.highlightChanged(HighlightsViewFactory.java:226)
   at org.netbeans.spi.editor.highlighting.support.AbstractHighlightsContainer.fireHighlightsChange(AbstractHighlightsContainer.java:110)
   at org.netbeans.modules.editor.lib2.highlighting.CompoundHighlightsContainer.access$000(CompoundHighlightsContainer.java:64)
   at org.netbeans.modules.editor.lib2.highlighting.CompoundHighlightsContainer$1.run(CompoundHighlightsContainer.java:273)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1379)
   at org.netbeans.modules.editor.lib2.highlighting.CompoundHighlightsContainer.setLayers(CompoundHighlightsContainer.java:271)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildContainer(HighlightingManager.java:372)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllContainers(HighlightingManager.java:350)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllLayers(HighlightingManager.java:332)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAll(HighlightingManager.java:258)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.propertyChange(HighlightingManager.java:177)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:188)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at java.awt.Component.firePropertyChange(Component.java:8128)
   at javax.swing.text.JTextComponent.setDocument(JTextComponent.java:437)
   at org.netbeans.modules.java.editor.JavaEditorWarmUpTask.run(JavaEditorWarmUpTask.java:212)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:133)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
   at java.awt.Dialog$1.run(Dialog.java:1046)
   at java.awt.Dialog$3.run(Dialog.java:1098)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1096)
   at javax.swing.JFileChooser.showDialog(JFileChooser.java:723)
   at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:626)
   at org.netbeans.modules.project.ui.actions.OpenProject.actionPerformed(OpenProject.java:103)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:337)
   at javax.swing.plaf.basic.BasicMenuItemUI$Actions.actionPerformed(BasicMenuItemUI.java:1192)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1633)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:2851)
   at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:670)
   at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:678)
   at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:678)
   at javax.swing.JMenuBar.processKeyBinding(JMenuBar.java:649)
   at org.openide.awt.MenuBar.processKeyBinding(MenuBar.java:237)
   at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:267)
   at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:254)
   at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2928)
   at javax.swing.SwingUtilities.processKeyBindings(SwingUtilities.java:1548)
   at javax.swing.UIManager$2.postProcessKeyEvent(UIManager.java:1438)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:722)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
   at java.awt.Component.dispatchEventImpl(Component.java:4502)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:133)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)