Board Thread:LotR Mod Technical Support/@comment-30553864-20161110021954/@comment-27219153-20161110023724

Well its crashing because it can't render a mob spawner. Did you not copy/paste the last line or two of the crash report, because either a few lines are missing or you don't have the LOTR mod installed.

Option 1: A few lines are missing and you have the LOTR mod installed. You will probably have to delete the mob spawner, either by deleting the region file it is located in or through the use of a third party editor to delete only the mob spawner or the chunk it is in. If you have builds in the area (the mob spawner is located at (-28,28,541)) they would likely be deleted if you delete the region file. Deleting only the mob spawner or the chunk it is in is a bit more complicated but will only effect the surrounding area minimally. Let me know how you want to do this and I can give you detailed instructions.

Option 2: You don't have the LOTR mod installed. Install it and see if that works.