When version 1.5.1 of this mod is in use with Just Enough Resources ( https://www.curseforge.com/minecraft/mc-mods/just-enough-resources-jer ), there is a noticeable amount of information missing. The thing that stood out at first was the fact that it refuses to show past a certain number of pages of info in the mob drops section:

Looks like an incompatibility, and it only does this with 1.5.1, works fine with 1.5.0.

Report this to JER not us