Board Thread:LotR Mod Technical Support/@comment-84.27.85.167-20160725141255/@comment-26172435-20160725144732

You're using an FML version I am no familiar with: 1.7.10-FML7.10.88.1024.

We recommend one of the versions listed here, preferrably not too new, not too old. Good performers are:

Recent, updated: 10.13.4.1558

Old, but steady performance with the mod: 10.13.2.1291

Your launcher doesn't allocate sufficient memory to Java, only 1G, while you need 2G. Check this post to see how to change that.

Hope this helps. Good luck!