When I try to trade with a villager, the following shows up:

http://pastebin.com/ichwPBf0

Also, the localization for the villager does not appear. (It just shows entity.agricraft.villager_farmer.name)

What version? As in what alpha version?

This happens even in the latest btw. I thought the villager was just not finished yet. I'm bad at bug reporting

I should mention the latest before GreenHouses were wiped out : (

The fix was the removal of greenhouses. 1.8.9 isn't a true release so...