Hello Frederick!

  FB> On ELF systems, like NetBSD-1.5/i386,
    > /usr/X11R6/lib/libSM.so.6 is a symlink to
    > /usr/X11R6/lib/libSM.so.6.0. Did you install the X
    > sets?

Yes, but thinking about it there's a good chance I built it
from to use the wrong version of the source (or with the
wrong options or something).

In any case, I've just found that Blackbox is available as a
binary package for NetBSD/i386 1.5, now all I have to do is
figure out how to install it!  :-)

My priorities are all wrong, I shouldn't be messing with
window managers right now.  I suppose what I'm learning will
have other applications too though.

Regards,
  - Andy Ball.