This is a crafting cycle, that is causing Thaumcraft 4 to get into an infinite loop.
Look how you can craft these shiny ingots and what you can craft from shiny ingots. Find the crafting cycle: "how can I craft shiny ingots from shiny ingots?" Install Minetweaker and remove one crafting recipe in this cyclical chain. See if this fixes your problem.
Thanx for the help; but as you see in my previous post, someone showed me it was Witching Gadgets being naughty about its Transmutation system. Switching them off fixed my problem.