I created a script to allow crafting of the Void Aspected Primal Staff (which is normally uncraftable in ordinary Thaumcraft 5 due to the vis number calculation). The recipe works, but, there's a glitch. All the items for the recipe are left in the table.

Script's in the pastebin
http://pastebin.com/WGGxnaTE

Using ModTweaker2-1.0.0 from curseforge and running FTB Unstable 1.8. Anything else I can provide to help track it down I'll be happy to provide.