How to Save Full Resolution Image Back to CameraRoll (Android)

[goJohnnyGo]

Device: Nexus One
OS: Android 2.3.4
Class: CameraRoll
Error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Error #2038: File I/O Error." errorID=2038]

I'm trying to develop a photo app but am having problems saving the full sized version of the image back to the CameraRoll. This is very frustrating as I've only seen examples saving the stage to CameraRoll (which I can get to work).

Is there a limitation to saving back to CameraRoll?? When I try to load an image (2592 x 1944) and save it directly back to CameraRoll using addBitmapData(), I get the following error.

[ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Error #2038: File I/O Error." errorID=2038]

Here's a code sample.

// class vars for CameraRoll and Loader
private var _cameraRoll:CameraRoll = new CameraRoll();
private var _loader:Loader = new Loader();

// launch _cameraRoll
private function launchCameraRoll(e:MouseEvent):void {
     _cameraRoll.addEventListener(MediaEvent.SELECT, loadImg);
     _cameraRoll.browseForImage();
}

// open selected image using _loader
private function loadImg(e:MediaEvent):void {
     if (e.data.isAsync) {
          _loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, loadImgError);
          _loader.contentLoaderInfo.addEventListener(Event.COMPLETE, saveImage);
          _loader.loadFilePromise(e.data);
     } else {
          _loader.loadFilePromise(e.data);
          saveImage();
     }
}

// once loaded, save image immediately back to _cameraRoll
private function saveImage(e:Event = null):void {
     _cameraRoll.addEventListener(ErrorEvent.ERROR, onError);
     _cameraRoll.addEventListener(Event.COMPLETE, onComplete);
    
     var bmd:BitmapData = new BitmapData(_loader.width, _loader.height);    
     bmd.draw(_loader);
    
     _cameraRoll.addBitmapData(bmd);
}
 
// trace error
private function onError(e:ErrorEvent):void {
     trace(e);  // [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Error #2038: File I/O Error." errorID=2038]
}
 
// show complete status
private function onComplete(e:Event):void {
     trace("complete");
}