Nope, it's definitely enchiridion 2 doing it. It's an issue where it expects the non-elven one to have been read first. This is due to the elven one replacing the basic one in the Ench2 library when you open it the first time, so if there isn't the basic one in the library to replace it packs a fit.This is actually a bug in enchiridion one I beleive. The mod author is already aware of it and its going to fix it. Its not related with the autodiscovery config setting