Thread:Mornsta/@comment-4919600-20120312090116/@comment-27188908-20120314064016

Beastofprey here, I found a solution.

You don't have to sell your materials and reacquired them through missions.

All you need is Withdraw your DLC Materials to your inventory.

And then, The Guns, Blades, Shields and Upgrades will be craftable again.