I have found a conflict between these two plugins:
NGFB Open Graph+ - Version 6.12.1 | By Jean-Sebastien Morisset
Gravity Forms - Version 1.7.11 | By rocketgenius
I have disabled NGFB Open Graph for now, so I don't think sending you my URL would be of much use. (Though I'd be happy to send it to you by email, give you access to the Admin of my WP site if you are interested.)
I also contacted Gravity Forms.