Board Thread:LotR Mod Technical Support/@comment-82.38.104.204-20170101194303/@comment-27219153-20170101225937

I would suggest that you delete (or move to a different folder) your  contained in your   folder. Then launch minecraft and see if you are able to open the map. If this works, you will unfortunately need to change all your settings back to your personal preferences. If it doesn't work, I would delete the new  and replace it with the old one if you moved it to a different folder.