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java.lang.IllegalStateException: 	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$DetailsSection.refreshSections(MasterDetailsEditorPage.java:2188)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$DetailsSection.selectionChanged(MasterDetailsEditorPage.java:2173)	at org.eclipse.ui.forms.DetailsPart$1.run(DetailsPart.java:274)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)	at org.eclipse.ui.forms.DetailsPart.showPage(DetailsPart.java:261)	at org.eclipse.ui.forms.DetailsPart.update(DetailsPart.java:234)	at org.eclipse.ui.forms.DetailsPart.selectionChanged(DetailsPart.java:219)	at org.eclipse.ui.forms.ManagedForm.fireSelectionChanged(ManagedForm.java:148)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$MasterSection.handleSelectionChangedEvent(MasterDetailsEditorPage.java:2096)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$MasterSection.access$0(MasterDetailsEditorPage.java:2091)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$MasterSection$2.handleTypedEvent(MasterDetailsEditorPage.java:2046)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$MasterSection$2.handleTypedEvent(MasterDetailsEditorPage.java:1)	at org.eclipse.sapphire.FilteredListener.handle(FilteredListener.java:35)	at org.eclipse.sapphire.EventDeliveryJob.run(EventDeliveryJob.java:52)	at org.eclipse.sapphire.JobQueue.process(JobQueue.java:94)	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:126)	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:132)	at org.eclipse.sapphire.ui.forms.MasterDetailsContentOutline.setSelectedNodes(MasterDetailsContentOutline.java:134)	at org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage$10.selectionChanged(MasterDetailsEditorPage.java:1031)	at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:163)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)	at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)	at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2197)	at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1228)	at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1257)	at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:242)	at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:236)	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:408)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4480)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1413)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3818)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3428)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:648)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:592)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)	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:380)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:601)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)	at org.eclipse.equinox.launcher.Main.main(Main.java:1438)