Automatic backup not working to specific directory.

The automatic backup seems to have an bug with the directory, or am I doing something wrong?

config is:

config system backup all-settings
    set status enable

    set protocol sftp
    set server "10.10.10.10"
    set user "user"
    set directory "/home/user/incoming/"
    set week_days sunday
    set time "15:27:10"
    set passwd ENC *****
    set crptpasswd ENC *****
end

When I have debug enabled:

diagnose debug application logd -1 

Request:

{ "client": "scheduled:15300", "id": 1, "method": "set", "params": [ { "data": { "local_file": "\/var\/config\/SYS_FMG-VM******_******_20160417_1438.dat", "msg": "SFTP error: Invalid directory \/home\/user\/incoming\/", "pty_err": 9, "pty_oper": 0, "pty_sess": 1, "pty_step": 5, "remote_filename": "", "remote_ip": "10.10.10.10", "remote_path": "\/home\/user\/incoming\/", "remote_port": 0, "userid": "user" }, "url": "\/log\/event\/system\/pty_operation" } ] }

So why do I get the "SFTP error: Invalid directory \/home\/user\/incoming\/" message. This directory works fine from the CLI:

execute backup all-settings sftp 10.10.10.10 /home/user/incoming/ user ***** *****

config system backup all-settings