IIRC, the residual heat item is from railcraft. Pneumaticraft has CTD 3 times in Crash landing. I love the idea of the mod, but omg, that mod drives me insane so badly. I just cannot recommend it being in any pack at it's current state. But, I've had some serious issues with railcraft recently that were world destroyers (residual heat and hidden blocks). This might be a mod interaction or something. I had railcraft destroy my world in Crafting Paradise. It made all the smeltery's into bombs. pick one of the blocks, ctd. This was after removing the hidden blocks already.