It's sort of a weird edge case, but heads up that this seems to prevent the Henford required NPCs from being generated if they've been deleted (e.g. in Srsly or Midnitetech's blank save.) Trying to enter Live Mode on a Henford lot under such a case kicks you to the world select with a 109:e56fc6bb:c8a07c87 message, much as the vanilla game did during that period where the "opt sims out of fame" bug was preventing NPCs from working right. I tested with only Townie Demographics and Better Exceptions to be sure.