http://pastebin.com/W5L9ZT7V

It seems a block is missing from the game. How did that happen ?

I dunno, I have the latest version for 1.7.10 for curse, could the structures folder I found having no real files inside have something to do with it?

I mean a block definition, so probably a mod has removed something from vanilla.
Not AncientWarfare.

I did have configs from 1.10.2 when I downgraded, may have been part of the problem, when I finish going back I'll see if the crash is still around. (I was going back because of the extra RAM load minecraft did in 1.10, and I've gone back.)

Closing this one as that seems to be a mismatch between 1.10 configs and using 1.7.10 and should not affect 1.12.