don't know how to load module '/boot/loader'

I just upgraded my head machine to r326772.  Now, boot2 can't find the
loader.  Instead, it tries to boot the kernel directly, which fails because
the ZFS module isn't loaded.  If I break into boot2 and type "boot
/boot/loader" I get the error "don't know how to load module
'/boot/loader'".  I last updated on 30-Nov, so this bug must've been
introduced since then.  Any ideas?

BTW, I can successfully boot with the following commands:
unload
load /boot/kernel/kernel
load zfs
boot

http://bayimg.com/iAKmFaAgl

-Alan