Rendered PDF Black , Using with HYPE

I am trying to render the given sketch into a PDF. Everything Works but when I Export it the PDF is full Black.

Here is the Code

/*
    * Author :: Aswin Mohan
    * Twitter :: @aswinmohanme
    *
    * Render an Image of Marlin Monroe with Cirlces , Just Learning
*/

import processing.pdf.*;

import hype.*;
import hype.extended.colorist.*;

HEllipse e;
HImage img;
HPixelColorist colors;

void setup() {
    size(500 , 600);
    H.init(this)
        .background(#000000)
    ;

    // Record PDF
    beginRecord(PDF,"marlin.pdf");

    // Load the Image and the Colors
    img = new HImage("Marlin.gif");
    colors = new HPixelColorist(img);

    int radius = 10;
    int padding = 10;
    int numberShapesX = width / ((radius+padding));
    int numberShapesY = height / ((radius+padding));

    for (int i=0; i < numberShapesX; ++i){
        for (int j=0; j < numberShapesY; ++j) {
            e = new HEllipse();
            e.strokeWeight(0)
                .loc(i*(radius+padding)+radius ,j*(radius+padding) + radius)
                .size(radius)
                .anchorAt(H.CENTER)
            ;
            colors.applyColor(e);
            H.add(e);
        }
    }

}

void draw() {
    H.drawStage();
}

void keyPressed() {
    if (key == 's'){
        endRecord();
        exit();
    }
}

I'm able to get the Output as PNG using saveFrame() but when I export to PDF , the file gets created but the the Contents are Black.

When I run with noLoop(); before the beginRecording(); , and press 's' , the Following Error Message gets shown.

    java.lang.RuntimeException: missing a pushMatrix() to go with that popMatrix()
        at processing.awt.PGraphicsJava2D.popMatrix(PGraphicsJava2D.java:2147)
        at processing.pdf.PGraphicsPDF.endDraw(Unknown Source)
        at processing.core.PApplet.endRecord(PApplet.java:10580)
        at MarlinMonroe_Circles.keyPressed(MarlinMonroe_Circles.java:78)
        at processing.core.PApplet.keyPressed(PApplet.java:3071)
        at processing.core.PApplet.handleKeyEvent(PApplet.java:2947)
        at processing.core.PApplet.dequeueEvents(PApplet.java:2621)
        at processing.core.PApplet.postEvent(PApplet.java:2607)
        at processing.awt.PSurfaceAWT.nativeKeyEvent(PSurfaceAWT.java:1346)
        at processing.awt.PSurfaceAWT$10.keyPressed(PSurfaceAWT.java:1399)
        at java.awt.Component.processKeyEvent(Component.java:6491)
        at java.awt.Component.processEvent(Component.java:6310)
        at java.awt.Component.dispatchEventImpl(Component.java:4889)
        at java.awt.Component.dispatchEvent(Component.java:4711)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771)
        at java.awt.Component.dispatchEventImpl(Component.java:4760)
        at java.awt.Container.dispatchEventImpl(Container.java:2294)
        at java.awt.Window.dispatchEventImpl(Window.java:2746)
        at java.awt.Component.dispatchEvent(Component.java:4711)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
        at java.awt.EventQueue.access$500(EventQueue.java:97)
        at java.awt.EventQueue$3.run(EventQueue.java:709)
        at java.awt.EventQueue$3.run(EventQueue.java:703)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
        at java.awt.EventQueue$4.run(EventQueue.java:731)
        at java.awt.EventQueue$4.run(EventQueue.java:729)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
    Finished.

How do I fix this.