this is my second time playing through dawnguard, im at the point in the DLC where i have to go recruit the guy who has the trolls and the girl who makes the plans for the crossbows. i have recurited the girl and thats it. my quest log says i still need to recruit the troll guy, but i get no active quest marker for him and the game does not allow me progress further in the quest line. is this a bug or am i just missing a step in the quest. any help would be nice. thanks