Image to be cropped = stretched

Hi,

I'm not sure why, in one theme it works alright, in another it's messed up. When the overlay cropping tool is opened the image is stretched. Have been trying to do some debugging and I found that if I change this code in manualcrop.js;

var width = ManualCrop.parseInt(image.width()) || ManualCrop.parseInt(image.attr('width'));
var height = ManualCrop.parseInt(image.height()) || ManualCrop.parseInt(image.attr('height'));

TO:

var width = ManualCrop.parseInt(image.attr('width'));
var height = ManualCrop.parseInt(image.attr('height'));

I have NO clue what in the 'bad' theme could be causing ManualCrop.parseInt(image.width()) to return an incorrect value of 100. The height seems to be alright.

Leaving the js to the above changes as a quick fix for now as I'm on a production site... but any help to resolve would be nice!

Cheers