WARNING: Going from readAccess to writeAccess
java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Thread.java:993)
        at org.openide.util.Mutex.enter(Mutex.java:407)
        at org.openide.util.Mutex.writeEnter(Mutex.java:357)
        at org.openide.util.Mutex.writeAccess(Mutex.java:312)
        at org.openide.nodes.Children$Array.add(Children.java:1070)
        at org.openide.nodes.Children$Keys.add(Children.java:1544)
        at org.netbeans.modules.jndi.JndiChildren.addNotify(JndiChildren.java:69
)
        at org.openide.nodes.Children.callAddNotify(Children.java:296)
        at org.openide.nodes.ChildrenArray.create(ChildrenArray.java:51)
        at org.openide.nodes.Children.getArray(Children.java:325)
        at org.openide.nodes.Children.computeNodes(Children.java:315)
        at org.openide.nodes.Children$2.run(Children.java:253)
        at org.openide.util.Mutex.readAccess(Mutex.java:160)
        at org.openide.nodes.Children.getNodes(Children.java:251)
        at org.openide.explorer.view.VisualizerNode$1.run(VisualizerNode.java:14
1)
        at org.openide.util.Mutex.readAccess(Mutex.java:160)
        at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.j
ava:139)
        at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode
.java:170)
        at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java
:163)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(Varia
bleHeightLayoutCache.java:1412)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(Varia
bleHeightLayoutCache.java:1221)
        at javax.swing.tree.VariableHeightLayoutCache.ensurePathIsExpanded(Varia
bleHeightLayoutCache.java:917)
        at javax.swing.tree.VariableHeightLayoutCache.setExpandedState(VariableH
eightLayoutCache.java:162)
        at javax.swing.plaf.basic.BasicTreeUI.updateExpandedDescendants(BasicTre
eUI.java:1428)
        at javax.swing.plaf.basic.BasicTreeUI$TreeExpansionHandler.treeExpanded(
BasicTreeUI.java:2239)
        at javax.swing.JTree.fireTreeExpanded(JTree.java:2114)
        at javax.swing.JTree.setExpandedState(JTree.java:2794)
        at javax.swing.JTree.expandPath(JTree.java:1646)
        at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState(BasicTreeUI.java
:2022)
        at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick(BasicTree
UI.java:2009)
        at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl(Basic
TreeUI.java:1963)
        at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.mousePressed(BasicTre
eUI.java:2674)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.Component.processMouseEvent(Component.java:3714)
        at java.awt.Component.processEvent(Component.java:3546)
        at java.awt.Container.processEvent(Container.java:1164)
        at java.awt.Component.dispatchEventImpl(Component.java:2595)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Component.dispatchEvent(Component.java:2499)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451
)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2210)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
        at java.awt.Container.dispatchEventImpl(Container.java:1200)
        at java.awt.Window.dispatchEventImpl(Window.java:912)
        at java.awt.Component.dispatchEvent(Component.java:2499)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:319)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:10
3)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:84)