I used the Corridor code yesterday to get the weapon core, and gave it to Saint-14. It disappeared from my inventory without anything else, the Momento bounty was nowhere to be seen. I am a new player, and found out I needed to do Saint's Quest line. I finished the entire questline/s and saved him today, and still no bounty. I have tried leaving the tower, logging out, closing the game, multiple times and it still will not appear. Anything else I can try, or am I just screwed out of the exotic quest with no hope of Bungie helping?