I've just recently tried to setup an SFTP provider that requires public key authentication, yet DropZone seems to be failing to connect to it consistently with a message that "Public Key Authorization Failed."


I've also tried the SCP extension, but it comes up with the message "Inappropriate ioctl for device."


I've tried this with several SFTP/SCP servers with the same results, however I have no problem connecting to any of these servers from the command-line or using other tools such as Transmit.

Thanks in advance for any help you can provide.