-- Component.requestFocusHelper c: [org.openide.explorer.view.TreeView$ExplorerTree] [1843ea1]
java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Thread.java:1071)
        at java.awt.Component.requestFocusHelper(Component.java:6133)
        at java.awt.Component.requestFocus(Component.java:5983)
        at javax.swing.JComponent.requestFocus(JComponent.java:1110)
        at org.openide.explorer.view.TreeView$ExplorerTree$ModelHandler.treeNodesRemoved(TreeView.java:1547)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesRemoved(DefaultTreeModel.java:530)
        at javax.swing.tree.DefaultTreeModel.nodesWereRemoved(DefaultTreeModel.java:308)
        at org.openide.explorer.view.NodeTreeModel$Listener.removed(NodeTreeModel.java:142)
        at org.openide.explorer.view.VisualizerChildren.removed(VisualizerChildren.java:113)
        at org.openide.explorer.view.VisualizerEvent$Removed.run(VisualizerEvent.java:122)
        at org.openide.explorer.view.VisualizerNode$QP.run(VisualizerNode.java:466)
        at org.openide.util.Mutex.doEvent(Mutex.java:912)
        at org.openide.util.Mutex.writeAccess(Mutex.java:329)
        at org.openide.explorer.view.VisualizerNode$QP.runSafe(VisualizerNode.java:450)
        at org.openide.explorer.view.VisualizerNode.childrenRemoved(VisualizerNode.java:263)
        at org.openide.util.WeakListener$Node.childrenRemoved(WeakListener.java:792)
        at org.openide.nodes.Node.fireSubNodesChange(Node.java:849)
        at org.openide.nodes.Children.notifyRemove(Children.java:737)
        at org.openide.nodes.Children$Keys.notifyRemove(Children.java:1933)
        at org.openide.nodes.Children.updateRemove(Children.java:706)
        at org.openide.nodes.Children.setEntries(Children.java:660)
        at org.openide.nodes.Children$3.run(Children.java:1874)
        at org.openide.util.Mutex.postRequest(Mutex.java:885)
        at org.openide.util.Mutex.postWriteRequest(Mutex.java:375)
        at org.openide.nodes.Children$Keys.applyKeys(Children.java:1882)
        at org.openide.nodes.Children$Keys.setKeys(Children.java:1864)
        at org.openide.nodes.FilterNode$ChildrenAdapter.run(FilterNode.java:1170)
        at org.openide.nodes.FilterNode$Children.updateKeys(FilterNode.java:1126)
        at org.openide.nodes.FilterNode$Children.filterChildrenRemoved(FilterNode.java:1106)
        at org.openide.nodes.FilterNode$ChildrenAdapter.childrenRemoved(FilterNode.java:1197)
        at org.openide.nodes.Node.fireSubNodesChange(Node.java:849)
        at org.openide.nodes.Children.notifyRemove(Children.java:737)
        at org.openide.nodes.Children$Keys.notifyRemove(Children.java:1933)
        at org.openide.nodes.Children.updateRemove(Children.java:706)
        at org.openide.nodes.Children.setEntries(Children.java:660)
        at org.openide.nodes.Children$3.run(Children.java:1874)
        at org.openide.util.Mutex.postRequest(Mutex.java:875)
        at org.openide.util.Mutex.postWriteRequest(Mutex.java:375)
        at org.openide.nodes.Children$Keys.applyKeys(Children.java:1882)
        at org.openide.nodes.Children$Keys.setKeys(Children.java:1864)
        at org.netbeans.modules.vcscore.runtime.RuntimeCommandsProvider$RuntimeFolderChildren.propertyChange(RuntimeCommandsProvider.java:178)
        at org.openide.util.WeakListener$PropertyChange.propertyChange(WeakListener.java:485)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:252)
        at org.netbeans.modules.vcscore.runtime.RuntimeCommandsProvider.firePropertyChange(RuntimeCommandsProvider.java:144)
        at org.netbeans.modules.cvsclient.JavaCvsRuntimeCommandsProvider.updateCommand(JavaCvsRuntimeCommandsProvider.java:129)
        at org.netbeans.modules.cvsclient.caching.NbCvsFsCache.addRefreshDisplayers(NbCvsFsCache.java:199)
        at org.netbeans.modules.javacvs.caching.CvsFsCache.doRefresh(CvsFsCache.java:518)
        at org.netbeans.modules.javacvs.JavaCvsFileSystem.doRefresh(JavaCvsFileSystem.java:1419)
        at org.netbeans.modules.cvsclient.NbJavaCvsFileSystem.doRefresh(NbJavaCvsFileSystem.java:731)
        at org.netbeans.modules.cvsclient.actions.JRefreshCommandAction.performCallBack(JRefreshCommandAction.java:46)
        at org.netbeans.modules.cvsclient.actions.JavaCvsActionSupporter.performAction(JavaCvsActionSupporter.java:250)
        at org.netbeans.modules.vcscore.actions.GeneralCommandAction.performAction(GeneralCommandAction.java:109)
        at org.netbeans.modules.vcscore.actions.GeneralCommandAction.performAction(GeneralCommandAction.java:398)
        at org.netbeans.modules.cvsclient.actions.CallBackCommandAction.performAction(CallBackCommandAction.java:137)
        at org.netbeans.modules.vcscore.actions.ClusteringAction.actionPerformed(ClusteringAction.java:304)
        at org.netbeans.modules.cvsclient.actions.CollectingAction.actionPerformed(CollectingAction.java:156)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
        at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1113)
        at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(BasicMenuItemUI.java:943)
        at java.awt.Component.processMouseEvent(Component.java:5134)
        at java.awt.Component.processEvent(Component.java:4931)
        at java.awt.Container.processEvent(Container.java:1566)
        at java.awt.Component.dispatchEventImpl(Component.java:3639)
        at java.awt.Container.dispatchEventImpl(Container.java:1623)
        at java.awt.Component.dispatchEvent(Component.java:3480)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
        at java.awt.Container.dispatchEventImpl(Container.java:1609)
        at java.awt.Window.dispatchEventImpl(Window.java:1590)
        at java.awt.Component.dispatchEvent(Component.java:3480)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)