Use JavaFX 8 Hudson build with Gradle

How to reproduce:
1) Download the sdk from http://jfx.us.oracle.com/hudson/job/8-gfx-gradle/471/label=windows-i586-30/artifact/artifacts/sdk/
2) Unzip the file in some directory of your choosing; on windows you will likely need to "chmod 755 sdk/rt/bin/*.dll"
3) Remove jdk8/jre/lib/ext/jfxrt.jar from the JDK 8 that you use to test.
4) Go to cobundle/ga-sample dir
4) Compile or run programs by appending PATH-TO-SDK/sdk/rt/lib/ext/jfxrt.jar to the bootclasspath

$ "/cygdrive/c/Program Files/Java/jdk1.8.0/bin/java.exe" -Xbootclasspath/a:c:/sdk/rt/lib/ext/jfxrt.jar -jar Ensemble.jar

Ensemble is launched with exception below:
java.lang.NullPointerException
        at com.sun.pisces.PiscesRenderer.fillLCDAlphaMask(PiscesRenderer.java:334)
        at com.sun.prism.sw.SWGraphics.drawStringInternal(SWGraphics.java:776)
        at com.sun.prism.sw.SWGraphics.drawString(SWGraphics.java:732)
        at com.sun.javafx.sg.prism.NGText.renderText(NGText.java:319)
        at com.sun.javafx.sg.prism.NGText.renderContent(NGText.java:277)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:633)
        at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:527)
        at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:553)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:408)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:633)
        at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:527)
        at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:553)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:408)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
        at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
        at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1254)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1283)
        at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:99)
        at com.sun.javafx.tk.quantum.AbstractPainter.paintImpl(AbstractPainter.java:210)
        at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:95)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
        at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
        at java.lang.Thread.run(Thread.java:724)