java.lang.AssertionError
   at org.netbeans.modules.extbrowser.plugins.chrome.WebKitDebuggingTransport.sendCommand(WebKitDebuggingTransport.java:62)
   at org.netbeans.modules.web.webkit.debugging.TransportHelper.sendBlockingCommand(TransportHelper.java:107)
   at org.netbeans.modules.web.webkit.debugging.api.Runtime.evaluate(Runtime.java:106)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel.invokeInAllDocuments(WebKitPageModel.java:440)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateHighlight(WebKitPageModel.java:521)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.propertyChange(WebKitPageModel.java:505)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at org.netbeans.modules.web.inspect.PageModel.firePropertyChange(PageModel.java:165)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel.setHighlightedNodes(WebKitPageModel.java:405)
   at org.netbeans.modules.web.inspect.ui.DomPanel$2$1.run(DomPanel.java:185)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.web.inspect.ui.DomPanel$2.processEvent(DomPanel.java:182)
   at org.netbeans.modules.web.inspect.ui.DomPanel$2.mouseMoved(DomPanel.java:144)
   at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:330)
   at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
   at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
   at java.awt.Component.processMouseMotionEvent(Component.java:6550)
   at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3339)
   at java.awt.Component.processEvent(Component.java:6274)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4505)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
   at java.awt.EventQueue.access$000(EventQueue.java:102)
   at java.awt.EventQueue$3.run(EventQueue.java:662)
   at java.awt.EventQueue$3.run(EventQueue.java:660)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:676)
   at java.awt.EventQueue$4.run(EventQueue.java:674)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)