Also,
To my knowledge, ftp is used to actually transfer the image from /images/dev to /images as nfs for /images is mounted as read-only
Make sure your server fog user password is set and that that password is what’s set in Storage Management Password and in FOG Settings->[FONT=Ubuntu][COLOR=#555555]FOG_TFTP_FTP_PASSWORD[/COLOR][/FONT]
[FONT=Ubuntu][COLOR=#555555]Hopefully this helps.[/COLOR][/FONT]