I used Cyberduck to transfer several movies over to AppleTv (running aTV Flash). I then decided to delete those movies. One movie deleted just fine--the other one refuses to delete. I've attached a screenshot.
The Error is cannot delete folder -- and then prohibited file name---it's a folder with a VIDEO TS folder in it.
This is the FTP server which does not allow to delete this file and hence because the folder is not empty it cannot be removed. You have to login to this server using e.g. SSH to forcefully remove this file. Report this bug to the PureFTPd server vendor.