java.lang.NullPointerException
   at org.netbeans.modules.debugger.jpda.jdi.VirtualMachineWrapper.mirrorOf(VirtualMachineWrapper.java:2898)
   at org.netbeans.modules.debugger.jpda.models.AbstractVariable.setValue(AbstractVariable.java:211)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTableModel.setValueAt(VariablesTableModel.java:414)
   at org.netbeans.spi.viewmodel.Models$DelegatingTableModel.setValueAt(Models.java:2347)
   at org.netbeans.modules.debugger.jpda.ui.models.NumericDisplayFilter.setValueAt(NumericDisplayFilter.java:164)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.setValueAt(Models.java:1527)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.setValueAt(VariablesTreeModelFilter.java:583)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.setValueAt(Models.java:1527)
   at org.netbeans.modules.debugger.jpda.ui.models.PendingActionsFilter.setValueAt(PendingActionsFilter.java:141)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.setValueAt(Models.java:1527)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.setValueAt(Models.java:1529)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.setValueAt(Models.java:1529)
   at org.netbeans.spi.viewmodel.Models$CompoundModel.setValueAt(Models.java:4603)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.setTheValue(TreeModelNode.java:2168)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.access$2800(TreeModelNode.java:1829)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty$2.run(TreeModelNode.java:2159)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1425)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:59)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:294)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2038)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.execute(RequestProcessor.java:410)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.setValue(TreeModelNode.java:2157)
   at org.openide.explorer.propertysheet.NodePropertyModel.setValue(NodePropertyModel.java:113)
   at org.openide.explorer.propertysheet.PropUtils.noDlgUpdateProp(PropUtils.java:562)
   at org.openide.explorer.propertysheet.EditablePropertyDisplayer._commit(EditablePropertyDisplayer.java:211)
   at org.openide.explorer.propertysheet.EditablePropertyDisplayer.commit(EditablePropertyDisplayer.java:132)
   at org.openide.explorer.propertysheet.PropertyPanel.commit(PropertyPanel.java:462)
   at org.openide.explorer.propertysheet.PropertyPanel.access$400(PropertyPanel.java:122)
   at org.openide.explorer.propertysheet.PropertyPanel$BridgeAccessor.commit(PropertyPanel.java:1308)
   at org.netbeans.modules.openide.explorer.PropertyPanelBridge.commit(PropertyPanelBridge.java:74)
   at org.openide.explorer.view.SheetCell$OutlineSheetCell.stopCellEditing(SheetCell.java:780)
   at org.netbeans.modules.viewmodel.DelegatingCellEditor.stopCellEditing(DelegatingCellEditor.java:190)
   at javax.swing.JTable$CellEditorRemover.propertyChange(JTable.java:5957)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:328)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at java.awt.KeyboardFocusManager.firePropertyChange(KeyboardFocusManager.java:1493)
   at java.awt.KeyboardFocusManager.setGlobalPermanentFocusOwner(KeyboardFocusManager.java:780)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:587)
   at java.awt.Component.dispatchEventImpl(Component.java:4752)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:751)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:702)
   at java.awt.EventQueue$3.run(EventQueue.java:696)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:724)
   at java.awt.EventQueue$4.run(EventQueue.java:722)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:721)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)