When i use set select option in JCop , i can't change the selection area , the plugin broken, because i couldn't retrieve ui property to get the handler for image.
Here's the code that i work on :
jsfiddle.net/k_shadow/ng5ayq93/2/
You should handle it by selecting image by their Id ,you should do it by replacing this line
var $this = this.ui.holder; by this one : $('#original') and get the height and width for the image , this will solve your issue.