Board Thread:LotR Mod Technical Support/@comment-2601:601:CD00:4180:8C5E:88C0:A612:2A2B-20200109061358/@comment-2601:601:CD00:4180:8C5E:88C0:A612:2A2B-20200109065642

solved i believe

the file was corrupt (jopt-simple-4.5.jar)

this video will show you the file location in your .minecraft folder

https://www.bing.com/videos/search?q=jopt-simple-4.5.jar+error&view=detail&mid=F199F337C8DBF976F926F199F337C8DBF976F926&FORM=VIRE