I recently upgraded our Moodle site from 2.2 to 2.3. Since the upgrade I am not able to add, edit or delete users, nor can my teachers edit their pages. When I try to edit a user I get the following error:
Coding error detected, it must be fixed by a programmer: Unknown method called against core_files_renderer :: filepicker_js_templates
With school starting in three weeks, I need to find a programmer that can resolve this for me.