koshechka - Hrm, well, that didn't appear to be my problem, but thanks.
I'd started over from the beginning and when I got to that step I was able to add the Strangetown downtown successfully. But that's when I got a little bit confused. I tried to continue on but after doing what I thought were the right steps (which I'm pretty sure weren't), I got to the very end and had no Pleasantview anymore.
I may just be a bit dense here and it's possible it's been answered previously, I'm just blind, but... After you get Strangetown attached, I'm a little unclear on what exactly is being done there. I guess I'm a little scatterbrained, but I find it a lot easier to do tutorial steps when it explains exactly why one does each step and exactly what you're doing, and I've tried to wrap my mind around it, but... I just don't get the purpose of certain things...
Part 4/Step 8:
"Open My Documents\EA Games\The Sims 2\Neighborhoods\N001 and find the file called N001_Downtown001, and its picture. Rename both the file and the picture to N001_Downtown002. Put them in the same safe place as you put the first one, created in Part 1/Step 7."
For that step, I have Downtown001 (default Downtown) and Downtown002 (Strangetown) in N001, as I had created the default downtown as directed in Part 1/Step 6 and it doesn't say to do anything with it between those steps. Am I copying the default downtown to my Finished Work folder and then renaming it? If so, why am I doing this now as opposed to when I created it, before making the 002-Strangetown downtown? Or does Downtown002 (Strangetown) need to be moved somewhere first, so that I can rename the default downtown from 001 to 002 where it is (since there's already a 002 in my N001 folder)?
I guess if I knew exactly why I'm doing Part 4/Step 8 I wouldn't be quite so confused.