bluetooth breaks installworld?

I've been getting this since yesterday when trying to installworld:

install: /var/chroot/usr/share/examples/netgraph/bluetooth/rc.bluetooth: No such file or directory
*** Error code 71

Stop in /a/asami/portbuild/i386/5/src/share/examples.
*** Error code 1

What is going on?  I've been trying to get a world built for about 3
days now, and it's been broken by one poorly-tested change or another.
That's very annoying.

Kris