Board Thread:Bug Reports/@comment-25782610-20150503222044/@comment-27723099-20150508084244

With so many other mods we can't know if the LOTR mod causes it, unless you try it again with all the other mods removed. If that doesn't work, try it in Forge without any mods at all.

If that doesn't work either, you can maybe give me the world and let me have a look on it. But 1.8 changed so much (for example it removed numeric IDs) that it could likely be that you can't restore it.