Exception on right click.

crash-report-1.log

Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
	at com.sun.javafx.scene.control.skin.BehaviorSkinBase$2.handle(BehaviorSkinBase.java:107)
	at com.sun.javafx.scene.control.skin.BehaviorSkinBase$2.handle(BehaviorSkinBase.java:105)
	at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
	at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
	at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
	at javafx.event.Event.fireEvent(Event.java:198)
	at javafx.scene.Scene.processMenuEvent(Scene.java:1802)
	at javafx.scene.Scene.access$4500(Scene.java:159)
	at javafx.scene.Scene$ScenePeerListener.menuEvent(Scene.java:2516)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$null$359(GlassViewEventHandler.java:466)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMenuEvent$360(GlassViewEventHandler.java:449)
	at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMenuEvent(GlassViewEventHandler.java:448)
	at com.sun.glass.ui.View.handleMenuEvent(View.java:563)
	at com.sun.glass.ui.View.notifyMenu(View.java:889)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
	at java.lang.Thread.run(Thread.java:748)