This is a strange problem, but I hope you will be able to give me a hand on that.
I'm using a file browser shortcode on one of my pages that is only accessible for logged in members.
When I am logged in as an admin, the file browser is working perfectly.
However, when I tried as a level1 or level2 member, the ajax-loader stopped loading and the page crashes.
Version of WordPress : 3.8
Version of s2Member Secure File Browser : 0.4.10
Version of s2Member Framework : 131126