Board Thread:Bug Reports/@comment-29883313-20160909202705/@comment-25330335-20160910015817

Check Help/Compatibility with other Mods, there may be something there that points to one of your mods causing this crash.

On other news, you could probably try removing some of the other not so commonly used mods with LOTR and see if you can reproduce it that way. Also find out exactly what you need to do to crash it with that setup.