Frequently we have users attempt to upload folders to use using the file request drag & drop zone feature.

Box does not support the uploading of folders, however it allows users to drag folders into the drag/drop zone.

This gives the appearance that folders are supported, even though they are not. Then when users hit upload they must wait a long time before encountering an error that their upload failed, and it does not tell them why.

Solution: when a user drags a folder into the file request drop zone, immediately show a message that says "Warning: Uploading folders is not supported."

Here is a screenshot of what I'm referring to:
https://hexanyaudio.box.com/s/qtteyt8hl3qmrknrfi2fj7a1qmttqfql