You posted faster than I could but yes, I did confirm that.Quote from heavy1metal
Found a bug:
Mod Pack & Version: Mindcrack 8.1.1
Mod & Version: Thaumcraft (Default version to 8.1.1)
Pastebin link to crash log: No crash
Whats the bug? Unable to craft iron arcane key
Can it be repeated? Single player and multiplayer - yes.
I am able to craft gold keys, just not iron keys.
Quote from Steelflame
That isn't a bug so much as a problem with how one of those mods ALSO uses the Iron bar > Nugget recipe, and doesn't register it with Forge Ore Dictionary, or Azanor doesn't register his, either way, the result is that it is effective the nuggets of the wrong mod to be used to craft the key, preventing crafting.