I finally got a response about that, after waiting for almost 2 days. There are some recipes that have the wrong LW skill requirement listed, so if you try to use a pattern you're not supposed to be able to learn, you get the "Item not found" error. It was probably stealth-added in a hotfix and they will fix the item description with the next client patch. Kinda annoying, since I'm stuck with Cloak of Beasts and Cloak of War as yellow for 2 more points before I get to the PvP recipes at 510. Current prices on my realm, it's 500g+ to craft either one, and neither are selling on the AH.
Dread Lörd Kaolian wrote:
As a forum admin, you... see things. Things that you can never unsee. Things that make you fervently wish to protect other people from ever seeing those things. This is why forum admins are sometimes cranky.