Board Thread:LotR Mod Technical Support/@comment-173.198.168.87-20170222213050/@comment-25330335-20170223000148

173.198.168.87 wrote: But it doesn't affect the lotr mod in any way. I don't know about that. It depends on what is in the log file. It sounds to me like this might be the issue. You could try removing it, since none of the mods you had loaded in the log above have anything to do with that library. It also might be optifine.

Look through the log file and see if there is a snippet with error messages. For example, use a find tool in whatever you're using to view the file to find "error" or "lotr". Stuff like that.