Really? Never ran into a problem there. What did they get stuck on? Did you try controlling them manually (Target them with left trigger then use right control stick to move them)?
Yes, I did. They didn't move at all. Once the minions carrying the food reach the position in front of the peasants, the only place they can move to is the platform where you leave the food for the peasants. I've checked Codemaster's forums, and I'm not the only one suffering from this problem. I guess I'll have to wait for a patch...