I can craft Fire with 4 redstone and on copper and when you try this it will crash your game But I was testing with a lot of other mods.

LOG:
http://paste.ee/p/WZfQv

I can't reproduce this... http://gyazo.com/f70e5e818dbbd4a85e32a909763d5e3f
Will try with your set of mods tomorrow

Also the recipe is in the Alloy Furnace recipe list.

After crashing with the recipe in the Alloy Furnace, if you reload the world it will crash again (http://pastebin.com/WE4chJZD).

A possible world corruption issue?

You could have said it was an Alloy Furnace recipe before...

Confirmed.