I posted this in the software/hardware forums as well, but wanted to put it here too to get more feedback.

So I downloaded Dawnguard, and I'm at the part where you accept the offer to become a vampire. However, when asked to transform into a ampire lord for the first time, I am unable to. I've activated the power, but nothing happens. I've waited multiple days to see if the power resets, but it doesn't work. I can't transform, and he just keeps asking me to. Is it a glitch related to my formerly being a werewolf? What do I do?

I dunno it's activated just like the Werewolf transformation is.

Right, I've transformed into a werewold before. This one just won't activate. It says the spell is "equipped," but nothing ever happens.