[AC-1999] Particular images in annotations do not render on the mapView

We have images associated with annotations (replacing the default pins) and these are not showing up when we display an Android V2 mapView using the 3.20GA SDK. These icons did show up for annotations using the 3.13GA SDK. AnyDensity is set to True. We create the annotations using:

                var TiMap = require("ti.map");

                var annot = TiMap.createAnnotation({
                    latitude : latitude,
                    longitude : longitude,
                    title : name,
                    subtitle : subtitle,
                    image : '/images/big_red_dot.png'
                });

Icons for different screens are at /Resources/android/images/[density]/big_red_dot.png where [density] is res-port-hdpi, etc, etc. There is also a big_red_dot.png file in /Resources/images/ The annotations are pushed into an "spots" array and then createMapView is called. We know that the "spots" are in the "spotRegion" of the map.

        var mapView = TiMap.createView({
            left : 0,
            top : 0,
            width : Ti.UI.FILL,
            height : Ti.UI.FILL,
            mapType : TiMap.NORMAL_TYPE,
            region : spotRegion,
            animate : false,
            regionFit : true,
            userLocation : true,
            annotations : spots,
        });

The result is that the correct mapView is shown but with no annotation images, but the annotations are there and touching the map brings up the annotations. See screenshot [http://postimg.org/image/9mjntx69l/]