Sorry guys. "Not working" meant that everything behaved as normal except for Dim Pro. The midi track's meters indicated that signal was being sent to the synth, but the track with Dim Pro's meters displayed nothing. Routing was correct, etc., and of course no sound was being generated.
On the fourth re-install with registry cleansing, it mysteriously starting "working." I wish that I could share with everyone what I may have done differently to get it functioning, but I honestly don't think I did anything different.
Thanks John and Kevo.