When I attempted Hungerer of Knowledge, it worked for me by restarting the memory block, but the conversationalist is only done as you progress through the game from start to finish. That itself requires a new game and it honestly took me about 7 hours to do that new game and focusing only on dialogues with Lucy and then getting the flags I was missing, which causes you to get all the flags from the area you missed them regardless for the ach. So good luck going through that again. It was a refresher for me to do a new game though cuz I forgot how the story went after almost 2 years of silence from Altair.
Top 5 Current Backlog: Final Fantasy XIII, Gears of War, Red Dead Redemption, Red Faction: Guerrilla, and Happy Wars