can't add profile to an event
This most often indicates a Javascript error - and in particular, this suggests a collision of Backbone.js with your CMS.  I suspect this question is actually a duplicate of mine here: Backbone isn&#39;t loading on Civi 4.6.11/WP 4.4.1

I should perhaps edit that question, since this appears to be a common issue with certain WordPress themes that have a media loader.