java.lang.NullPointerException
   at org.netbeans.modules.debugger.jpda.ui.models.DebuggingNodeModel.loadFrameDescription(DebuggingNodeModel.java:466)
   at org.netbeans.modules.debugger.jpda.ui.models.DebuggingNodeModel.getDisplayName(DebuggingNodeModel.java:247)
   at org.netbeans.spi.viewmodel.Models$DelegatingNodeModel.getDisplayName(Models.java:3061)
   at org.netbeans.modules.debugger.jpda.ui.models.DebuggingMonitorModel.getDisplayName(DebuggingMonitorModel.java:512)
   at org.netbeans.spi.viewmodel.Models$CompoundNodeModel.getDisplayName(Models.java:1148)
   at org.netbeans.modules.debugger.jpda.js.frames.models.DebuggingJSNodeModel.getDisplayName(DebuggingJSNodeModel.java:166)
   at org.netbeans.spi.viewmodel.Models$CompoundNodeModel.getDisplayName(Models.java:1148)
   at org.netbeans.spi.viewmodel.Models$CompoundModel.getDisplayName(Models.java:4491)
   at org.netbeans.modules.viewmodel.TreeModelNode.setModelDisplayName(TreeModelNode.java:843)
   at org.netbeans.modules.viewmodel.TreeModelNode.getHtmlDisplayName(TreeModelNode.java:406)
   at org.openide.explorer.view.VisualizerNode.getHtmlDisplayName(VisualizerNode.java:540)
   at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:147)
   at org.netbeans.modules.debugger.ui.views.debugging.DebugTreeView$DebugTreeNodeRenderer.getTreeCellRendererComponent(DebugTreeView.java:425)
   at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2807)
   at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:492)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:553)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:199)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:529)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:522)
   at javax.swing.JTree.getPathBounds(JTree.java:2111)
   at org.openide.explorer.view.ViewTooltips.showJTree(ViewTooltips.java:252)
   at org.openide.explorer.view.ViewTooltips.show(ViewTooltips.java:193)
   at org.openide.explorer.view.ViewTooltips.mouseMoved(ViewTooltips.java:167)
   at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:330)
   at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
   at java.awt.Component.processMouseMotionEvent(Component.java:6578)
   at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3342)
   at java.awt.Component.processEvent(Component.java:6302)
   at java.awt.Container.processEvent(Container.java:2236)
   at java.awt.Component.dispatchEventImpl(Component.java:4889)
   at java.awt.Container.dispatchEventImpl(Container.java:2294)
   at java.awt.Component.dispatchEvent(Component.java:4711)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4888)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4538)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4466)
   at java.awt.Container.dispatchEventImpl(Container.java:2280)
   at java.awt.Window.dispatchEventImpl(Window.java:2746)
   at java.awt.Component.dispatchEvent(Component.java:4711)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:731)
   at java.awt.EventQueue$4.run(EventQueue.java:729)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)