When trying to set up this mod, I initially had a problem installing Forge for 1.7.10. Unlike how installation videos showed me, I was unable to download Version 10.13.4.1558 both through the Windows Installer and the .jar executable. However, I was able to install the latest Version 10.13.4.1614, which makes sense as that's the one they suggest on the Forge website.
From there on, I followed the steps laid out in mindofmike's installation video (link: https://www.youtube.com/watch?v=C78dZscvnkU&t=181s )
When I finished putting the .jar file for the mod in the mods folder, I went to play it and was met with an instant crash. The error it gave was Exit Code: 0. There seem to be some ways to get rid of this error, but nothing specific to the lotr mod. Basically, I want to see if there is already a well known fix for this specific mod before I go try a billion different things to solve the issue. I'm using Windows 10 btw.
Obviously, there must be something I'm doing wrong, and I'm ready to go into more detail if anybody is willing to help me with this problem. Thank you.