They changed plantable trees a lot in 2.1. They're now not just a copy of one kind of regular tree but their own thing, with more variation in appearance. So I'm not opposed to a 2.1 update but I'm not sure if it's needed, or what it would do.
oh i see. Well my bad for posting before testing, Im going through my big mod list right now and sorting out the incompatabilities so well see how it looks when i generate a new world