I hope this isnt dead, but I have ran into an issue where the citizens stop working. Then they starve to death. Hitting esc twice, and thus zooming out and back in again, seems to fix it for a few seconds.
Would you mind emailing your save file to individualkex@gmail.com ?
The save file should be located at C:\Users{user}\AppData\LocalLow\IndividualKex\Orrstead\savedata