Board Thread:Questions and Answers/@comment-67.10.217.146-20180620031740/@comment-25118285-20180620035442

You haven't installed Llib 1.5.1 for 1.7.10, which is required to run the mod. You can find it here: https://minecraft.curseforge.com/projects/llibrary/files/2319767

MAKE SURE YOU USE THE GRAY DOWNLOAD BUTTON