I made a joke thread on the General Discussion forum regarding this, but mostly to serve as public entertainment given how I thought it was funny at the time. The thread can be found here: http://forums.spiralknights.com/en/node/46559

In either case, the general issue is that Prestige Missions are now asking me to turn in things that I cannot get access to, as in, they do not exist as drop materials from monsters, cannot be purchased from Brinks, Vatel, or the Auction House, and cannot be obtained as a drop from bosses either.

I am a little confused as to what I'm supposed to do. While it certainly won't kill me to skip a few prestige missions, I feel like this is a genuine issue now that another user has come forth and stated they have the same material for the Monstrous Research mission tomorrow as well.