Sorry Aric, new bug with the farm. I no longer get the error message, so the old bug is fixed, but now my cows produce negative food. In the end of day report it shows a negative value, and it forced the rest of my residents to eat in town.
I still have the issue with the farm. As soon as i add any cows, and click next day, i don't get an end of day report and my game doesn't autosave. This is with a completely fresh install of version 0.5.25 (including Appdata/Roaming/Stive).
