I am trying to crop a large image to make thumbnails. But I can't get WideImage to save the file. I've tried the following:

1st method:

$img = WideImage::load('../files/' . $file_name)->crop('center', 'center', 200, 200);
$img->saveToFile('../files/thumb/thumb_' . $file_name);

2nd method:

$img = WideImage::load('../files/' . $file_name)->crop('center', 'center', 200, 200);
$img->copy('../files/thumb/thumb_' . $file_name);

But nothing seems to happen, when I am performing any of these methods. I am getting no errors and no thumbnails.

Am I doing something wrong here?