java.lang.NullPointerException at org.openide.nodes.FilterNode.(FilterNode.java:198) at org.openide.nodes.FilterNode.(FilterNode.java:179) at org.openide.nodes.FilterNode.(FilterNode.java:170) at org.netbeans.modules.server.ui.manager.ServerManagerPanel$ServerNode.(ServerManagerPanel.java:503) at org.netbeans.modules.server.ui.manager.ServerManagerPanel$ServersChildren.createNodeForKey(ServerManagerPanel.java:469) at org.netbeans.modules.server.ui.manager.ServerManagerPanel$ServersChildren.createNodeForKey(ServerManagerPanel.java:455) at org.openide.nodes.ChildFactory.createNodesForKey(ChildFactory.java:116) at org.openide.nodes.SynchChildren.createNodes(SynchChildren.java:78) at org.openide.nodes.Children$Keys$KE.nodes(Children.java:1608) at org.openide.nodes.ChildrenArray.nodesFor(ChildrenArray.java:168) at org.openide.nodes.EntrySupport$Default$Info.nodes(EntrySupport.java:925) at org.openide.nodes.EntrySupport$Default.justComputeNodes(EntrySupport.java:246) at org.openide.nodes.ChildrenArray.nodes(ChildrenArray.java:101) at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:173) at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:219) at org.openide.nodes.EntrySupport$Default.getNodesCount(EntrySupport.java:223) at org.openide.nodes.Children.getNodesCount(Children.java:480) at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:257) at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:247) at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:324) at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:168) at javax.swing.tree.FixedHeightLayoutCache$FHTreeStateNode.expand(FixedHeightLayoutCache.java:1135) at javax.swing.tree.FixedHeightLayoutCache.rebuild(FixedHeightLayoutCache.java:600) at javax.swing.tree.FixedHeightLayoutCache.treeStructureChanged(FixedHeightLayoutCache.java:472) at javax.swing.plaf.basic.BasicTreeUI$Handler.treeStructureChanged(BasicTreeUI.java:3829) at javax.swing.tree.DefaultTreeModel.fireTreeStructureChanged(DefaultTreeModel.java:561) at javax.swing.tree.DefaultTreeModel.nodeStructureChanged(DefaultTreeModel.java:347) at javax.swing.tree.DefaultTreeModel.setRoot(DefaultTreeModel.java:117) at org.openide.explorer.view.NodeTreeModel$1.run(NodeTreeModel.java:113) at org.openide.util.Mutex.doEvent(Mutex.java:1335) at org.openide.util.Mutex.readAccess(Mutex.java:345) at org.openide.explorer.view.NodeTreeModel.setNode(NodeTreeModel.java:99) at org.openide.explorer.view.TreeView.synchronizeRootContext(TreeView.java:809) at org.openide.explorer.view.TreeView.lookupExplorerManager(TreeView.java:636) at org.openide.explorer.view.TreeView.addNotify(TreeView.java:616) at java.awt.Container.addNotify(Container.java:2578) at javax.swing.JComponent.addNotify(JComponent.java:4683) at org.netbeans.modules.server.ui.manager.ServerManagerPanel.addNotify(ServerManagerPanel.java:110) at java.awt.Container.addNotify(Container.java:2578) at javax.swing.JComponent.addNotify(JComponent.java:4683) at java.awt.Container.addNotify(Container.java:2578) at javax.swing.JComponent.addNotify(JComponent.java:4683) at java.awt.Container.addNotify(Container.java:2578) at javax.swing.JComponent.addNotify(JComponent.java:4683) at javax.swing.JRootPane.addNotify(JRootPane.java:735) at java.awt.Container.addNotify(Container.java:2578) at java.awt.Window.addNotify(Window.java:662) at java.awt.Dialog.addNotify(Dialog.java:748) at org.netbeans.core.windows.services.NbPresenter.addNotify(NbPresenter.java:427) at java.awt.Window.pack(Window.java:703) at org.netbeans.core.windows.services.NbPresenter.initialize(NbPresenter.java:251) at org.netbeans.core.windows.services.NbPresenter.(NbPresenter.java:181) at org.netbeans.core.windows.services.NbDialog.(NbDialog.java:64) at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:132) at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:107) at org.openide.util.Mutex.doEventAccess(Mutex.java:1355) at org.openide.util.Mutex.readAccess(Mutex.java:268) at org.netbeans.core.windows.services.DialogDisplayerImpl.createDialog(DialogDisplayerImpl.java:107) at org.netbeans.api.server.CommonServerUIs.showCustomizer(CommonServerUIs.java:88) at org.netbeans.modules.server.ui.manager.ServerManagerAction.performAction(ServerManagerAction.java:61) at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118) at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77) at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:114) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$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:1225) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266) at java.awt.Component.processMouseEvent(Component.java:6216) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5981) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4583) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4556) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4220) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4150) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2475) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) 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)