java.lang.NullPointerException
	at org.tekkotsu.ui.editor.model.MultiTransitionModel.isSingleTransition(MultiTransitionModel.java:255)
	at org.tekkotsu.ui.editor.editparts.MultiTransitionEditPart.createFigure(MultiTransitionEditPart.java:105)
	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.getFigure(AbstractGraphicalEditPart.java:435)
	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addChildVisual(AbstractGraphicalEditPart.java:197)
	at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:194)
	at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:734)
	at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:684)
	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:554)
	at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:232)
	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:212)
	at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:195)
	at org.eclipse.gef.editparts.ScalableRootEditPart.setContents(ScalableRootEditPart.java:404)
	at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:583)
	at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:592)
	at org.tekkotsu.ui.editor.StateMachineEditor.initializeGraphicalViewer(StateMachineEditor.java:822)
	at org.tekkotsu.ui.editor.MultiPageGraphicalEditorWithPalette.createGraphicalViewer(MultiPageGraphicalEditorWithPalette.java:126)
	at org.tekkotsu.ui.editor.StateMachineEditor.createLayoutEditorPage(StateMachineEditor.java:396)
	at org.tekkotsu.ui.editor.StateMachineEditor.createPages(StateMachineEditor.java:408)
	at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:241)
	at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:585)
	at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:365)
	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
	at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)
	at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
	at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
	at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
	at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)
	at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)
	at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1051)
	at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1256)
	at org.eclipse.ui.internal.PartStack.add(PartStack.java:442)
	at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:109)
	at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:60)
	at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:212)
	at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:202)
	at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:753)
	at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:665)
	at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:628)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2323)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2258)
	at org.eclipse.ui.internal.WorkbenchPage.access$9(WorkbenchPage.java:2250)
	at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2236)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2231)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2204)
	at org.tekkotsu.ui.editor.StateMachineEditor.doSaveAs(StateMachineEditor.java:734)
	at org.eclipse.ui.internal.SaveAsAction.run(SaveAsAction.java:64)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:996)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1021)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2867)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2572)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
	at org.tekkotsu.ui.rcp.StoryboardApplication.run(StoryboardApplication.java:23)
	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
	at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
	at org.eclipse.core.launcher.Main.run(Main.java:973)
	at org.eclipse.core.launcher.Main.main(Main.java:948)