The town I'm playing is missing, I need help in getting it to show

I think I will go ahead and start a fresh new Pleasantview. I already have a saved new copy of it, just in case something happened. It amazes me how fragile this game can be. Thinking back on something, I did see a very strange fear that one of my sims had, and it was a fear of being chased by Mitch. Mitch was at the time her romantic interest, and not some dog.

I did go through that list, and I didn't do anything that was mentioned.