I have a small problem with one of my cities. I go to the market, select supply, select city to send resources, resources deduct from inventory, caravan travels to city, resources unload but do not credit to inventory, caravan returns to city of origin. It happened on three caravans last night and I tried again this morning with two caravans and still have the same problem. It appears to only affect one of my cities as the others seem to be receiving caravans just fine. Has anyone else experienced this problem?