In the included initrd.gz archive the ftp and the http file are linked together, which causes that both files are empty when the installer is started. If you unpack the initrd manually, both files contain the same content (and they are linked; see cpio error msg).
-- Preseeding Config from HTTP and FTP does not work https://launchpad.net/bugs/95398 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs