I have the quest Against the Hive that I must have abandoned at some point, because it was in the abandoned quests thing in the Tower. I picked the quest up again, but I've already completed the campaign and most of the other quests including the main line. The quest says I need to talk to the Speaker, but when I do he tries to sell me stuff. I assume this is bugged, I am doing something incorrect, or its all a massive conspiracy by the Speaker to steal my hard earned glimmer for his useless trivial nonsense.