Attempting to consume items with Internal Furnace while a reflex recurve bow is in your inventory causes a segmentation fault.

[Eighth-of-Third]

DEBUG: Tried to get invalid material: bone
Press spacebar...Segmentation fault: 11

I'm assuming it's attempting to retrieve the amount of bionic power consuming bone items will give the player, then crashes when it can't retrieve a non-existent value; you can't consume bone items for power.

More broadly, I think this means that all items that are made of both consumable and non-consumable materials will cause a crash in this situation.