Sometime the image is displayed and sometime is not!

Ti SDK: 3.2.2GA

Platform target: Android

Device: emulator and S3

Hi, I'm trying to crop an image with this code:

function cropImage (img){
    var _up;
    var _cropUp; 
    var up;
 
    _up = Ti.UI.createImageView({
        image: img.image,
        width: img.width,
        height: img.height,
    });
 
    _cropUp = Ti.UI.createView({
        width: img.width,
        height: parseInt(img.height/2),
    });
    _cropUp.add(img);
    img.left = 0;
    img.top = 0;
 
    up = Ti.UI.createImageView({        
        image: _cropUp.toImage(),
        width: img.width,
        height: _cropUp.height,     
    });
 
    return up;
 
};
var win = Ti.UI.createWindow({
    backgroundColor: '#abd',    
});
 
var img01 = Ti.UI.createImageView({image: '12.jpg', width: 500, height: 500,});
 
win.add(cropImage(img01));
 
win.open();

The strange is that sometime the image is showed and sometime not. In this case i have to exit from app and relaunch it to see it. What kind of mysterious issue is this? Thanks for attention.