JavaFX Window CSS class -> NullPointerException

[bigDevDe]

When setting in the Window a CSS class like

window.setTitleBarStyleClass("object-node-window-titlebar")

there is a NullPointerException (however, the CSS class is visualized correctly!):

12.Jun.2014 18:48:34 [SCHWERWIEGEND] Failed to load skin 'jfxtras.labs.internal.scene.control.skin.window.DefaultWindowSkin' for control FlowNodeWindow@32300f0d[styleClass=window]
java.lang.NullPointerException
at eu.mihosoft.vrl.workflow.fx.FlowNodeWindow$4.changed(FlowNodeWindow.java:134)
at eu.mihosoft.vrl.workflow.fx.FlowNodeWindow$4.changed(FlowNodeWindow.java:126)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:176)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(ObjectPropertyBase.java:105)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
at javafx.scene.control.Control$2.set(Control.java:229)
at javafx.scene.control.Control$2.set(Control.java:212)
at javafx.scene.control.Control.loadSkinClass(Control.java:723)
at javafx.scene.control.Control$5.invalidated(Control.java:657)
at javafx.beans.property.StringPropertyBase.markInvalid(StringPropertyBase.java:109)
at javafx.beans.property.StringPropertyBase.set(StringPropertyBase.java:143)
at javafx.css.StyleableStringProperty.set(StyleableStringProperty.java:83)
at javafx.scene.control.Control$5.set(Control.java:649)
at javafx.css.StyleableStringProperty.applyStyle(StyleableStringProperty.java:69)
at javafx.css.StyleableStringProperty.applyStyle(StyleableStringProperty.java:45)
at javafx.scene.CssStyleHelper.transitionToState(CssStyleHelper.java:786)
at javafx.scene.Node.impl_processCSS(Node.java:8889)
at javafx.scene.Parent.impl_processCSS(Parent.java:1250)
at javafx.scene.control.Control.impl_processCSS(Control.java:872)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.control.Control.impl_processCSS(Control.java:872)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.control.Control.impl_processCSS(Control.java:872)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Node.impl_processCSS(Node.java:8869)
at javafx.scene.Parent.impl_processCSS(Parent.java:1250)
at javafx.scene.control.Control.impl_processCSS(Control.java:872)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Parent.impl_processCSS(Parent.java:1281)
at javafx.scene.Node.processCSS(Node.java:8732)
at javafx.scene.Node.processCSS(Node.java:8725)
at javafx.scene.Node.processCSS(Node.java:8725)
at javafx.scene.Node.processCSS(Node.java:8725)
at javafx.scene.Node.processCSS(Node.java:8725)
at javafx.scene.Scene.doCSSPass(Scene.java:569)
at javafx.scene.Scene.access$3500(Scene.java:201)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2385)
at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:322)
at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:320)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:320)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:349)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:479)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:460)
at com.sun.javafx.tk.quantum.QuantumToolkit$13.run(QuantumToolkit.java:327)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
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$4$1.run(WinApplication.java:112)
at java.lang.Thread.run(Thread.java:744)

[miho]

Does it work now?

[bigDevDe]

No nullpointer any more :-)