I recently raised my Consortium rep so I could get the item to learn the weapon illusion executioner. Once I bought the item, I could not use it, it gave the already known error.
The problem is it is not known. It is in the not learned yet list on the appearances tab, and I cannot select it at a transmogrifier.
I already tried a full interface reset, removing all addons and deleting the WTF, interface, and cache folders. When I logged back in, same problem.