Failure upgrading from 8-stable to current (9.0-Beta2)

Last night I upgraded my laptop from 8-stable (Sept. 7) to head. I
almost worked, but I
did hit an issue during the installworld phase. The problem was when the make in
/usr/src/share/zoneinfo tried to run tzsetup that dialog failed to run
with the error:
/tmp/install.xtvA5ik4/libdialog.so.7: Undefined symbol "_nc_wacs"

I simply deleted the line "tzsetup $${optC} -r; \" at line 76 of the
Makefile and re-ran the
installworld. Everything worked from that point. I then compared
/etc/localtime with
/usr/share/zoneinfo/America/Los_Angeles and they were identical, so I
already had
a localtime file built with the new zic.

After the installworld completed, I tried running tzsetup and dialog
ran fine, so I have
no idea why the failure during the instsallworld. I did a search and
found a very similar
report in questions_at_. The only difference I saw was that my error was
not prefaced
with "/libexec/ld-elf.so.1: " and, of course, the random string.
http://lists.freebsd.org/pipermail/freebsd-questions/2011-July/232421.html

Any ideas what might be happening here? It is a bit disconcerting as
userland is half
current and half stable when it dies. It would be very awkward to have
to back out and
may people updating to 9.0 after release might not know how to work around it.
-- 
R. Kevin Oberman, Network Engineer - Retired
E-mail: kob6558_at_gmail.com