The horse cart will always get stuck in it's little stable when it first tries to go to work. I've tried all of these solutions;

- Rotating the stable to an easier path.
- Clearing debris and entities from around the stockpile.
- Clearing the path from the barn to the stockpile.
- Removing all water, elevation changes and pathing-block tiles.
- Removing literally everything in a radius around the horse and the stockpile and reverting it entirely to flat land.

The horse still won't leave the barn. It says "Status: Going to work" but it just turns inside of itself and presumably starts eating the hay from the back of it's cart.

Yes there is a stockpile.
Yes the stockpile has Ale in it ready to be transported.
Yes the receiving player has their own stockpile.
Yes the carter post and the stockpile belong to the same estate.

I'm about ready to click-clack ♥♥♥♥♥♥♥ BANG this idiot horse.