terrisus

Well, to follow up on my previous post, I did (it seems) solve the problem.

While I had been uninstalling and clearing out the directories and such, I had been keeping the save file and putting that back in when I started again. I uninstalled and removed everything, and when I reinstalled created a new save, and made it up to that point, the appropriate map is now showing up.
So, most likely I had done something wrong in the original installation, and, while I had uninstalled and reinstalled, whatever problem there was, was still hanging out in my save file.

So, yay, problem solved, and on with my adventure. Just figured I'd post here in case anyone else ran into a similar sort of issue, as opposed to leaving the topic without a follow-up conclusion.