Fatal Error on Aviary Options Add-On for Gravity Forms Wordpress

I have installed the Gravity Forms on my admin panel and I am trying to add the Aviary Add-On for photo editing.

When I Activate the Aviary plugin I see the Aviary Options tab but when I click I see this error:

Fatal error: Cannot redeclare options_discussion_add_js() (previously declared in /nfs/c09/h04/mnt/138726/domains/http://ift.tt/1Q2t5US) in /nfs/c09/h04/mnt/138726/domains/http://ift.tt/1RSXVkE on line 27

I have restored my theme twice but to no results. Also I have disabled all my others plugins leaving only the Gravity Form and Aviary Add-on activated but the problem persists.

Does anyone know how I can solve this ?

via Chebli Mohamed