ZSF and installkernel 10.0-BETA1

I installed Beta1 using the ZFS option, all default settings. I sync the
source the other day and did a buildworld and buildkernel. When I do
installkernel I get

mkdir -p /boot/kernel
mkdir: /boot: No such file or directory

and the install stops. With another box that used a standard UFS
installation I have no problem.

I'm sure the ZFS installkernel is know issue, but I can't seem to find if
there is a solution or not.
Is there a work around or not?

Thanks


Phillip