Do you have these "module" lines, too:
module /hurd/ext2fs.static --multiboot-command-line=${kernel-command-line} --ho
st-priv-port=${host-port} --device-master-port=${device-port} --exec-server-task
=${exec-task} -T typed ${root} $(task-create) $(task-resume)
module /lib/ld.so.1 /hurd/exec $(exec-task=task-create)
Important note: each module line _MUST_ be one line!!!