kldload: exec format error on newly built GENERIC

[Steve Franks]

I just added a device driver source file to the appropriate location
and rebuilt:

dystant# cd /usr/src
dystant# make buildkernel KERNCONF=GENERIC
...
dystant# make installkernel KERNCONF=GENERIC
dystant# init 6
...
[steve at dystant /usr/home/steve]$ sudo kldload ucp
kldload: can't load ucp: Exec format error

??? What am I doing wrong?

Thanks,
Steve