I ported HelloBufferedImageExport to use the public snapshot and SwingFXUtils API, and I got the following exception. The program is attached.

Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:403)
        at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
        at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
        at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ArrayIndexOutOfBoundsException
        at java.lang.System.arraycopy(Native Method)
        at com.sun.javafx.image.impl.BaseIntToIntConverter$IntAnyToSameConverter.doConvert(BaseIntToIntConverter.java:148)
        at com.sun.javafx.image.impl.BaseIntToIntConverter.convert(BaseIntToIntConverter.java:86)
        at com.sun.prism.Image$IntAccess.getPixels(Image.java:989)
        at com.sun.prism.Image.getPixels(Image.java:750)
        at javafx.scene.image.Image$2.getPixels(Image.java:1149)
        at javafx.embed.swing.SwingFXUtils.fromFXImage(SwingFXUtils.java:178)
        at helloworld.HelloBufferedImageExport.start(HelloBufferedImageExport.java:45)
        at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
        at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:206)
        at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:173)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
        at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
        ... 1 more