XCTU IndexOutOfBounds

[SomeUserName1]

Hi,
couldnt find a repo for XCTU itself, so i'm adding this here as it's Java.

./launcher 
Serialio Library: version 10.2.3: build 9233
Copyright (c) 1996-2015 Serialio.com, All Rights Reserved.
os.name="Linux"  os.arch="amd64"
SerialPort class loaded: jspLux86_64bit
Serialio.com jspLuxArm 4.7
Copyright (C) Serialio.com 1996-2003. All rights reserved.
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IndexOutOfBoundsException: Index does not exist)
	at org.eclipse.swt.SWT.error(SWT.java:4533)
	at org.eclipse.swt.SWT.error(SWT.java:4448)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:255)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:5414)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer.networkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.Network.notifyNetworkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.Network.notifyNetworkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.NetworkDiscoveryJob.deviceDiscovered(Unknown Source)
	at com.digi.xbee.NodeDiscovery$3$1.run(NodeDiscovery.java:423)
Caused by: java.lang.IndexOutOfBoundsException: Index does not exist
	at org.eclipse.draw2d.Figure.add(Figure.java:140)
	at org.eclipse.draw2d.FreeformLayer.add(FreeformLayer.java:28)
	at org.eclipse.draw2d.Figure.add(Figure.java:185)
	at org.eclipse.zest.core.widgets.internal.ZestRootLayer.addNode(ZestRootLayer.java:41)
	at org.eclipse.zest.core.widgets.Graph.addNode(Graph.java:1033)
	at org.eclipse.zest.core.widgets.GraphNode.<init>(GraphNode.java:114)
	at org.eclipse.zest.core.widgets.GraphNode.<init>(GraphNode.java:88)
	at org.eclipse.zest.core.widgets.CGraphNode.<init>(CGraphNode.java:25)
	at org.eclipse.zest.core.viewers.internal.AbstractStructuredGraphViewer.addGraphModelNode(AbstractStructuredGraphViewer.java:262)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.createNode(AbstractStylingModelFactory.java:231)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.createNode(AbstractStylingModelFactory.java:241)
	at org.eclipse.zest.core.viewers.internal.GraphModelEntityRelationshipFactory.createModelNodes(GraphModelEntityRelationshipFactory.java:107)
	at org.eclipse.zest.core.viewers.internal.GraphModelEntityRelationshipFactory.doBuildGraph(GraphModelEntityRelationshipFactory.java:56)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.refreshGraph(AbstractStylingModelFactory.java:305)
	at org.eclipse.zest.core.viewers.internal.AbstractStructuredGraphViewer.internalRefresh(AbstractStructuredGraphViewer.java:323)
	at org.eclipse.jface.viewers.StructuredViewer.internalRefresh(StructuredViewer.java:1314)
	at org.eclipse.jface.viewers.StructuredViewer.lambda$1(StructuredViewer.java:1542)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1458)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1419)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1542)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1503)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer.refreshGraph(Unknown Source)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer$6.run(Unknown Source)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4536)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4154)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
	at com.digi.xctung.application.XctungApplication.start(Unknown Source)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
Exception in thread "Thread-201" org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IndexOutOfBoundsException: Index does not exist)
	at org.eclipse.swt.SWT.error(SWT.java:4533)
	at org.eclipse.swt.SWT.error(SWT.java:4448)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:255)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:5414)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer.networkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.Network.notifyNetworkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.Network.notifyNetworkChanged(Unknown Source)
	at com.digi.xctung.network.core.model.NetworkDiscoveryJob.purgeNodeConnections(Unknown Source)
	at com.digi.xctung.network.core.model.NetworkDiscoveryJob.processDiscoveryFinished(Unknown Source)
	at com.digi.xctung.network.core.model.NetworkDiscoveryJob.discoveryFinished(Unknown Source)
	at com.digi.xbee.NodeDiscovery.discoverDevicesAPI(NodeDiscovery.java:476)
	at com.digi.xbee.NodeDiscovery.startDiscoveryProcess(NodeDiscovery.java:252)
	at com.digi.xbee.NodeDiscovery.access$1(NodeDiscovery.java:218)
	at com.digi.xbee.NodeDiscovery$1.run(NodeDiscovery.java:198)
Caused by: java.lang.IndexOutOfBoundsException: Index does not exist
	at org.eclipse.draw2d.Figure.add(Figure.java:140)
	at org.eclipse.draw2d.FreeformLayer.add(FreeformLayer.java:28)
	at org.eclipse.draw2d.Figure.add(Figure.java:185)
	at org.eclipse.zest.core.widgets.internal.ZestRootLayer.addNode(ZestRootLayer.java:41)
	at org.eclipse.zest.core.widgets.Graph.addNode(Graph.java:1033)
	at org.eclipse.zest.core.widgets.GraphNode.<init>(GraphNode.java:114)
	at org.eclipse.zest.core.widgets.GraphNode.<init>(GraphNode.java:88)
	at org.eclipse.zest.core.widgets.CGraphNode.<init>(CGraphNode.java:25)
	at org.eclipse.zest.core.viewers.internal.AbstractStructuredGraphViewer.addGraphModelNode(AbstractStructuredGraphViewer.java:262)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.createNode(AbstractStylingModelFactory.java:231)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.createNode(AbstractStylingModelFactory.java:241)
	at org.eclipse.zest.core.viewers.internal.GraphModelEntityRelationshipFactory.createModelNodes(GraphModelEntityRelationshipFactory.java:107)
	at org.eclipse.zest.core.viewers.internal.GraphModelEntityRelationshipFactory.doBuildGraph(GraphModelEntityRelationshipFactory.java:56)
	at org.eclipse.zest.core.viewers.internal.AbstractStylingModelFactory.refreshGraph(AbstractStylingModelFactory.java:305)
	at org.eclipse.zest.core.viewers.internal.AbstractStructuredGraphViewer.internalRefresh(AbstractStructuredGraphViewer.java:323)
	at org.eclipse.jface.viewers.StructuredViewer.internalRefresh(StructuredViewer.java:1314)
	at org.eclipse.jface.viewers.StructuredViewer.lambda$1(StructuredViewer.java:1542)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1458)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1419)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1542)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1503)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer.refreshGraph(Unknown Source)
	at com.digi.xctung.network.ui.internal.topology.viewer.TopologyGraphViewer$6.run(Unknown Source)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4536)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4154)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
	at com.digi.xctung.application.XctungApplication.start(Unknown Source)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1492)

Happened when i was in the Network working model view, using 2x XBee Pro USB dongles, scanning with each device once. Further the stop scan button ends up in a deadlock of the pop up .