This is a map I had played and lost, everyone was killed. I had liked the map a lot so I went back to day 1 and reloaded. The first play through I had a bug in my trading post where it displayed bric a brac, chalk and lacquer for sale. But they weren't actually there. On the second play through of this game I built a trading post and the exact same items where in there BEFORE I ever had my first trader come into the trading post. As soon as it said "incoming trader" I clicked on the trading post to await them, and the items where there. Maybe this will help to work out the bug?