Re: Harvesters bug
I think this problem is due to the old unchanged pathfinding.
1. when the arrows on floor of the the raffinery are lit, there is an harvester anywhere on the map that tries to get back to the raffinery, even if it‘s way is blocked. (Maybe there is an harvester on the south beyond the river?)
2. when a raffinery is blocked while a harvester unloads, a full harvester tries to drive to the next free raffinery.
3. you cant‘t send more than one harvester to the raffinery at once. Make all harvesters stop whatever they are doing (arrows on the raffinery are off) send them back one after the other. Wait until they have unloaded before you send the next one.