Okay so, I've gotten to the point where I turn in the lexicon and to septimus and now he wants me to collect blood. I know Im supposed to have a conversation with Hermius Mora and the Wretched Abyss shows up, things are going good BUT I cant interect with it no matter how many times I press the E button to activate dialoge. I've tried everything I can think of to prompt a reaction reloading, waiting, aggroing Septimus and sheathing my weapons but nada. I've looked around but there doesnt seem to be much info on the issue so I figured I'd come here in the hopes of finding a fix because as it is my only options seem to be kill Septimus and fail the quest or keep it in my log indefinatly.
I'm not running any mods, I do have all the current DLC I dont have any of it loaded so the games running pretty much vanilla.