java.lang.NullPointerException
   at org.netbeans.modules.glassfish.common.CommonServerSupport.setInstanceAttr(CommonServerSupport.java:569)
   at org.netbeans.modules.glassfish.common.CommonServerSupport.setEnvironmentProperty(CommonServerSupport.java:536)
   at org.netbeans.modules.glassfish.common.ui.VmCustomizer.persistFields(VmCustomizer.java:108)
   at org.netbeans.modules.glassfish.common.ui.VmCustomizer.removeNotify(VmCustomizer.java:139)
   at java.awt.Container.removeNotify(Container.java:2609)
   at javax.swing.JComponent.removeNotify(JComponent.java:4701)
   at java.awt.Container.removeAll(Container.java:1224)
   at org.netbeans.modules.server.ui.manager.ServerManagerPanel.selectServer(ServerManagerPanel.java:329)
   at org.netbeans.modules.server.ui.manager.ServerManagerPanel.propertyChange(ServerManagerPanel.java:121)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:868)
   at org.openide.util.Mutex.doEvent(Mutex.java:1341)
   at org.openide.util.Mutex.readAccess(Mutex.java:348)
   at org.openide.explorer.ExplorerManager.fireInAWT(ExplorerManager.java:865)
   at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.fire(ExplorerManager.java:285)
   at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:296)
   at org.openide.explorer.view.BeanTreeView.selectionChanged(BeanTreeView.java:150)
   at org.openide.explorer.view.TreeView.callSelectionChanged(TreeView.java:866)
   at org.openide.explorer.view.TreeView$TreePropertyListener.valueChanged(TreeView.java:1460)
   at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:629)
   at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1078)
   at javax.swing.tree.DefaultTreeSelectionModel.removeSelectionPaths(DefaultTreeSelectionModel.java:497)
   at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:3516)
   at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:3566)
   at javax.swing.JTree$TreeModelHandler.treeNodesRemoved(JTree.java:3650)
   at org.openide.explorer.view.TreeView$ExplorerTree$ModelHandler.treeNodesRemoved(TreeView.java:2431)
   at javax.swing.tree.DefaultTreeModel.fireTreeNodesRemoved(DefaultTreeModel.java:530)
   at javax.swing.tree.DefaultTreeModel.nodesWereRemoved(DefaultTreeModel.java:310)
   at org.openide.explorer.view.NodeTreeModel$Listener.removed(NodeTreeModel.java:259)
   at org.openide.explorer.view.VisualizerChildren.removed(VisualizerChildren.java:287)
   at org.openide.explorer.view.VisualizerEvent$Removed.run(VisualizerEvent.java:135)
   at org.openide.util.Mutex.readAccess(Mutex.java:365)
   at org.openide.util.Mutex$1R.run(Mutex.java:1307)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1907)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1326)
   at org.openide.util.Mutex.readAccess(Mutex.java:354)
   at org.openide.explorer.view.VisualizerNode$QP.run(VisualizerNode.java:682)
   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:148)
   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$3.run(Dialog.java:1098)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1096)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1038)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1072)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1060)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:126)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1361)
   at org.openide.util.Mutex.readAccess(Mutex.java:271)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1045)
   at java.awt.Component.show(Component.java:1563)
   at java.awt.Component.setVisible(Component.java:1515)
   at java.awt.Window.setVisible(Window.java:842)
   at java.awt.Dialog.setVisible(Dialog.java:986)
   at org.netbeans.api.server.CommonServerUIs.showCustomizer(CommonServerUIs.java:93)
   at org.netbeans.modules.glassfish.common.actions.PropertiesAction.performAction(PropertiesAction.java:66)
   at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:586)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:583)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
   at java.awt.Component.processMouseEvent(Component.java:6267)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6032)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4577)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   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:148)
   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)