I am using the latest version of your Pro plugin, and of Divi: 3.0.100
As you mentioned, I went to Settings > User Role Editor, and turned off “Force custom post types to use their own capabilities”.
This fixed the error.
However, I really need that option. Unless you could supply a method to implement it via a function.
I really only need that option for one of the roles, and for one post type.
I have a custom role that, when logged in to wp-admin, only has capability to: