I'm currently playing on the server where the goal is to make your town reach 4000 pop. Now the town requires wood to grow, but there's no sawmill very close to the town. There are two sawmills 20-30 squares from the town, one of which is named after the town. Delivering woods to those sawmills doesn't count, evidently.
Known problem, or am I just being a bit thick here?
Could it be that I've built too much roads around the town, so they can't find a suitable place to build a sawmill close enough?