Duplicating Book of Knowledge on join

[bigstiffy]

I'm experiencing this issue on the 1.3.7 build, every time I join my server the book spawns in my inventory, seems to only happen if the client has restarted, as rejoining the server without restarting the client does not spawn a new book.

[COM8]

Hey bigstiffy,
whether you get the book or not is normally bound to the users NBT.
And the NBT is bound to you personal UUID.
Is it possible that your server is running in offline mode?
Or do you change your UUID every time you restart your game (by the use of a custom MC launcher)?

If you wish, you can disable spawning with the book in the Crystallogy config on the bottom at:
"Whether the Player should get the Book of Knowledge, if he enters the world for the first time"
"B:shouldSpawnWithBook=true" Just change the to a and this should definitely fix it for you .😃

[bigstiffy]

Seems you're right, I had tested with both vanilla launcher and multiMC. MultiMC seemed to produce a new book on every join, vanilla launcher I can't replicate it with multiple joins.