SimplyJetpacks crash

[ChromaPIE]

First of all I do know that this is probably THEIR problem but we can't expect a fix from them so.. Hopefully Nomi Labs could help patching that.

Log: https://mclo.gs/dIgz6Fy#L10041, this directs to the crashing part.

To reproduce: A jetpack (for me that's Resonant jetpack with armor plate), an enchanted book (Protection)
I'm using the anvil from EnderIO Dark Steel Upgrade to do the enchanting. Jetpack in, and now simply hovering your cursor over the book will freeze and crash the game immediately.