Repeated images with shortcode for hashtag

Hi, I am having and issue with Instapress when using the hashtag feature, after picture 20 is loaded the images start repeating, you can see it here: http://fashionblogmexico.com/instagram/

This is the shortcode I am using:
[instapress tag=”fashionblogmexico” piccount=”60″ size=”155″]

Does anyone know how can I fix it?

http://wordpress.org/extend/plugins/instapress/