There is a 4.xx pkg floating around now. No need for reactPSN or a .rap file. Works great on Rogero.
edit: I take no credit for this, just posting the link. No reactPSN needed. Just move files to hdd0/game/NPUB30932/ and install .pgk.
No (or very minimal) freezing, Wizards Companion opens fast, no lag after battles. Def the way to play it.