Quote Originally Posted by zarkwizard View Post
On a side note. You need to be in orbit of the other persons planet that you are trading with. When your harvester is in orbit you will see a trade icon. You will then set what world of yours you want to trade with. You can only have a 1:1 with any specific planet. So if you are trading from your homeworld to someone elses home world that connection can only exist once.
This is obviously a key piece of information that is not at all clear from the tutorial ("It's just like harvesting except on a player's planet!"). I must have tried setting up a trade route like I would a harvesting route 10 times today, baffled as to why it was failing. This would explain it.