For some reason I can't access the site. I'll need to be able to browse it to debug this. I think it might just need an updated version of the kcfinder files. That is where I would start, but I can't really do much if I can't test my changes. Maybe we need to set up a screen sharing session. Your page isn't accessible for me... perhaps that is an issue that can be resolved first if that is a concern for you.