User blog comment:Cundö Calassëru/Co-Op anyone?/@comment-25841881-20170511014635/@comment-25330335-20170512023417

If it's connected with the LOTR mod (being a sub-mod), then you are probably planning to use methods and stuff from LOTR. That said, you'll need to be the same version of java as Mevans is using, and you'll need to set up your forge workspace with the mod.