Addons file in Membership and fancybox in Membership JS

As I continue trying to solve my site issues, I unzipped Membership to compare those files with my installed Membership files.

The most obvious difference is that in the installed Membership files there is a folder called Addons that's chalk full of php files.

The second obvious difference was that the installed files includes a Fancybox folder and files under JS. Is this bad?

Mostly, the site is looking pretty good except I've lost my pictures once again.

Thanks for all you do,

Joanne