Tue Oct 16 09:52:09 CEST 2001: java.lang.IllegalStateException: null
java.lang.IllegalStateException
        at org.openide.util.Mutex.reenter(Mutex.java:496)
        at org.openide.util.Mutex.leave(Mutex.java:586)
        at org.openide.util.Mutex.access$200(Mutex.java:68)
        at org.openide.util.Mutex$Privileged.exitReadAccess(Mutex.java:1202)
        at org.openide.nodes.Children.getNodes(Children.java:286)
        at org.netbeans.core.NbPlaces$Ch.defaultNodesForType(NbPlaces.java:322)
        at org.netbeans.core.NbPlaces$Ch.createNodes(NbPlaces.java:287)
        at org.openide.nodes.Children$Keys$KE.nodes(Children.java:1820)
        at org.openide.nodes.ChildrenArray.nodesFor(ChildrenArray.java:125)
        at org.openide.nodes.Children$Info.nodes(Children.java:929)
        at org.openide.nodes.Children.updateAdd(Children.java:737)
        at org.openide.nodes.Children.setEntries(Children.java:526)
        at org.openide.nodes.Children$3.run(Children.java:1713)
        at org.openide.util.Mutex.leave(Mutex.java:603)
        at org.openide.util.Mutex.readAccess(Mutex.java:178)
        at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:141)
        at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:181)
        at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:163)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1412)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1221)
        at javax.swing.tree.VariableHeightLayoutCache.rebuild(VariableHeightLayoutCache.java:674)
        at javax.swing.tree.VariableHeightLayoutCache.treeStructureChanged(VariableHeightLayoutCache.java:578)
        at javax.swing.plaf.basic.BasicTreeUI$TreeModelHandler.treeStructureChanged(BasicTreeUI.java:2394)
        at javax.swing.tree.DefaultTreeModel.fireTreeStructureChanged(DefaultTreeModel.java:518)
        at javax.swing.tree.DefaultTreeModel.nodeStructureChanged(DefaultTreeModel.java:340)
        at javax.swing.tree.DefaultTreeModel.setRoot(DefaultTreeModel.java:118)
        at org.openide.explorer.view.NodeTreeModel$1.run(NodeTreeModel.java:77)
        at org.openide.util.Mutex.doEvent(Mutex.java:892)
        at org.openide.util.Mutex.readAccess(Mutex.java:234)
        at org.openide.explorer.view.NodeTreeModel.setNode(NodeTreeModel.java:64)
        at org.openide.explorer.view.TreeView.synchronizeRootContext(TreeView.java:575)
        at org.openide.explorer.view.TreeView.addNotify(TreeView.java:463)
        at org.openide.explorer.view.TreeTableView.addNotify(TreeTableView.java:169)
        at java.awt.Container.addNotify(Container.java:1579)
        at javax.swing.JComponent.addNotify(JComponent.java:3500)
        at java.awt.Container.addNotify(Container.java:1579)
        at javax.swing.JComponent.addNotify(JComponent.java:3500)
        at java.awt.Container.addImpl(Container.java:374)
        at java.awt.Container.add(Container.java:228)
        at org.netbeans.core.windows.frames.MultiTabbedContainerImpl.attachComponents(MultiTabbedContainerImpl.java:197)
        at org.netbeans.core.windows.frames.DefaultContainerImpl.setAttached(DefaultContainerImpl.java:466)
        at org.netbeans.core.windows.ModeImpl.setVisible(ModeImpl.java:1016)
        at org.netbeans.core.windows.ModeImpl$1.performCommand(ModeImpl.java:384)
        at org.netbeans.core.windows.DeferredPerformer.processCommand(DeferredPerformer.java:165)
        at org.netbeans.core.windows.DeferredPerformer.putRequest(DeferredPerformer.java:83)
        at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:357)
        at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:337)
        at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:325)
        at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.doOpen(WindowManagerImpl.java:1301)
        at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.access$800(WindowManagerImpl.java:1173)
        at org.netbeans.core.windows.WindowManagerImpl$2.run(WindowManagerImpl.java:1262)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:337)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)