com.sun.jdi.VMDisconnectedException
        at com.sun.tools.jdi.TargetVM.waitForReply(TargetVM.java:285)
        at com.sun.tools.jdi.VirtualMachineImpl.waitForTargetReply(VirtualMachineImpl.java:1015)
        at com.sun.tools.jdi.PacketStream.waitForReply(PacketStream.java:51)
        at com.sun.tools.jdi.JDWP$ThreadGroupReference$Name.waitForReply(JDWP.java:5796)
        at com.sun.tools.jdi.JDWP$ThreadGroupReference$Name.process(JDWP.java:5777)
        at com.sun.tools.jdi.ThreadGroupReferenceImpl.name(ThreadGroupReferenceImpl.java:45)
        at org.netbeans.modules.debugger.jpda.models.JPDAThreadGroupImpl.getName(JPDAThreadGroupImpl.java:109)
        at org.netbeans.modules.debugger.jpda.ui.models.DebuggingTreeModel.isSystem(DebuggingTreeModel.java:220)
        at org.netbeans.modules.debugger.jpda.ui.models.DebuggingTreeModel.filterSystemThreads(DebuggingTreeModel.java:187)
        at org.netbeans.modules.debugger.jpda.ui.models.DebuggingTreeModel.reorder(DebuggingTreeModel.java:162)
        at org.netbeans.modules.debugger.jpda.ui.models.CachedChildrenTreeModel.getChildren(CachedChildrenTreeModel.java:87)
        at org.netbeans.spi.viewmodel.Models$DelegatingTreeModel.getChildren(Models.java:1198)
        at org.netbeans.modules.debugger.jpda.ui.models.DebuggingMonitorModel.getChildren(DebuggingMonitorModel.java:255)
        at org.netbeans.spi.viewmodel.Models$CompoundTreeModel.getChildren(Models.java:678)
        at org.netbeans.modules.debugger.jpda.ui.models.HiddenCallStackFramesFilter.getChildren(HiddenCallStackFramesFilter.java:227)
        at org.netbeans.spi.viewmodel.Models$CompoundTreeModel.getChildren(Models.java:678)
        at org.netbeans.spi.viewmodel.Models$CompoundModel.getChildren(Models.java:2971)
        at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.evaluateLazily(TreeModelNode.java:746)
        at org.netbeans.modules.viewmodel.TreeModelNode$LazyEvaluator.run(TreeModelNode.java:1173)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)