JavaFX 2.1: Toolkit not initialized

Found a solution. If I just create a JFXPanel from Swing EDT before invoking JavaFX Platform.runLater it works.
I don’t know how reliable this solution is, I might choose JFXPanel and JFrame if turns out to be unstable.

public class BootJavaFX {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new JFXPanel(); // this will prepare JavaFX toolkit and environment
                Platform.runLater(new Runnable() {
                    @Override
                    public void run() {
                        StageBuilder.create()
                                .scene(SceneBuilder.create()
                                        .width(320)
                                        .height(240)
                                        .root(LabelBuilder.create()
                                                .font(Font.font("Arial", 54))
                                                .text("JavaFX")
                                                .build())
                                        .build())
                                .onCloseRequest(new EventHandler<WindowEvent>() {
                                    @Override
                                    public void handle(WindowEvent windowEvent) {
                                        System.exit(0);
                                    }
                                })
                                .build()
                                .show();
                    }
                });
            }
        });
    }
}