No npc traders?

[Kou]

Perhaps I'm doing this wrong but for the life of me I can not get any npcs to trade energy cells to either my ore mine or my solar plant.

After testing both and setting to their price to 20 creds per unit, 4 over the average and the max it seems, I sat in seta for one hour while doing chores about the house. After returning, I discovered that neither had received any trades in that time frame.

And yes, I did toss credits onto the factories to pay the traders who would, or rather I thought would, arrive and thus fuel my growing empire. Course it isn't growing right now, it has staled and falling flat into the ground.

Is there some bug associated with a complete lack of traders?