Issue description: I went to set up my auto crafting to make a sag mill, and everything went fine until I tried to craft it in the system.

What happens: As soon as I confirm I want it to be crafted, the game crashes.

What you expected to happen: I expect the system to craft the sag mill

Steps to reproduce:

1. type in sag mill
2. click craft
3. confirm craft
4. game crashes
   ...

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge: 14.23.4.2705
• Refined Storage: 1.6.5

Does this issue occur on a server? no

If a (crash)log is relevant for this issue, link it here:

https://paste.dimdev.org/wukotixifi.mccrash

####Edit:
had the induction smelter set up to only accept ores and sand and it wasn't happy about that.