AddThis

AddThis is sharing only the homepage

I used 3dCart and have set up the AddThis integration with my profileID. When I try to share a blog article, it will only share the homepage no matter what I do. Here is the URL I'm trying to share:
http://www.lgbotanicals.com/Essential-Oil-Production-Part-V_b_18.html

I've copied the URL generated when first clicking the AddThis Facebook button and it contains the correct URL to share. However sometime between addThis getting the link and passing it to Facebook, it gets changed to the homepage URL.

I've reviewed the other answer in here about using canonical URL's, and unfortunately 3dCart doesn't generate them for blog posts for some reason, so I have no way to get the current URL and add it to the addthis:url variable.

I manage another 3dCart site, and even without canonical URL's, sharing using AddThis works correctly. Here's a post on the web site it's working on:
http://www.totalcomputing.net/Discussion-on-Utilitizing-VOIP-as-a-Means-of-Transmitting-a-Fire-Alarm-Signal_b_10.html

Any and all help is appreciated.