java.lang.NullPointerException
at com.sun.javafx.scene.control.skin.VirtualFlow.fitCells(VirtualFlow.java:1526)
at com.sun.javafx.scene.control.skin.VirtualFlow.updateScrollBarsAndCells(VirtualFlow.java:1505)
at com.sun.javafx.scene.control.skin.VirtualFlow.adjustPixels(VirtualFlow.java:2108)
at com.sun.javafx.scene.control.skin.VirtualFlow$5.handle(VirtualFlow.java:573)
at com.sun.javafx.scene.control.skin.VirtualFlow$5.handle(VirtualFlow.java:524)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
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.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:203)
at javafx.scene.Scene.processGestureEvent(Scene.java:1691)
at javafx.scene.Scene.access$300(Scene.java:190)
at javafx.scene.Scene$ScenePeerListener.scrollEvent(Scene.java:2468)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$2.run(GlassViewEventHandler.java:408)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$2.run(GlassViewEventHandler.java:404)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleScrollEvent(GlassViewEventHandler.java:404)
at com.sun.glass.ui.View.notifyScroll(View.java:904)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:101)
at java.lang.Thread.run(Thread.java:724)