I used this file manager for my lessons as it conveniently syncs the lesson plan materials from our cloud service for offline use on my iPad. Using the "recents" list, I would use airplay and a classroom Apple TV to project worksheets stored in documents onto the blackboard for demonstration purposes. As of the latest update, though, Documents will crash and all data synced to the iPad will suddenly become corrupted and inaccessible. I found this out the hard way and had to restructure my lesson on the fly in front of visiting parents. For now I am relying other apps to serve my needs, but I really hope this bug is fixed so I can go back to using Documents again.
Eggyhead85 about Documents: File Manager & Docs, v6.0