That is very strange. I was able to research Trade easily the other day when I played. Not sure what kind of bug that would be falling under when it only picks one person to not work for. lol Since you said this is the last two trees you need, I assume you know how to actually do the research so this is very odd. Did you try breaking and replacing the research table to see if that fixes whatever bug is going on?Yup, I asked for info there. The oddest part is that it works fine for everyone else on the server, just not for myself. I didn't crash, so no crash log, and nothing popped up in any consoles. Used a research note to get around the particular research, and nothing in the trees (specifically the Trade & Mathematics trees) would research. Very strange.