You can change normally to the book, but when you close it crashes the game

Umm. Are you even going to give me a crash report. Or you want me to go on a wild goose chase? It worked fine for me with the blood magic book from guide api.

Sorry, I forgot. Here are the pastebin link for the crash part of the log http://pastebin.com/cpBcdidR
And here the full log http://pastebin.com/L1KniQ2Z
Actually there's no crash log, the game just froze and get stuck
And the issue happen with the blood magic book

Out of interest what did you list the book as in your json.

But i'm using the default configs, i actually deleted the enchiridion folder just to see if the problem was on the configs

That is why i asked... How am I meant to know you did that?

I don't speak English normally, sorry, so I didn't understood your question
But yes, I'm using the defaults