For my fourth town I have the following situation, which is repeated for every cell I try in my domain for this town (went through at least 6 settlers, one at a time).
The town has no puzzles, no mobs, nothing of interest, except for in the center of the country are four charred clusters of trees and desert weed. There are also two fancy treasure chests sitting open and empty. In the midst of this are signs of an abandoned campsite.
One piece of evidence exists, a regular stone which reads:
"I cannot carry any more items so I gather them around, make a pile of them and burn them all. Mwahahahaha!" -sir Fred
" ...is this familiar to anyone? All the cells I tried in various areas are identical. Odd.