Avatar upload not working anymore

Hi,

Bug description :
When I go on edit profile screen (index.php?option=com_easysocial&view=profile&layout=edit&Itemid=742) and pick a photo to upload as a new avatar nothing append.
And I have a js error in the console.
On Chrome the error message is : Uncaught TypeError: Cannot call method 'get' of undefined
You can find a screenshot in attachment about the js part of code which throw this error.
On Firefox the error message is : TypeError: $.Image is undefined
var loader = $.Image.get(img),

I am working on the easysoical integration on a Joomla 2.5.17 website.
The Avatar upload was working fine until 2 or 3 weeks ago.
I first thought that it was a problem with the easysocial theme I created but even with one of the default easysocial theme I have the same bug and error message.
Maybe it comes from one of the last easysocial updates...

I update easysocial as soon as a new version is out as we are still in the developpment stage on this website, so we are currently working with the 1.1.3 version of easysocial.

The last time I had a bug like this it was in edit profiles in the backoffice, and to solve the bug I had to reinstall Easysocial with the iunstaller.
So I tried this solution, and reinstall Easysocial from the installer but it didn't fix the avatar upload issue.

Thanks for your support.