I NEED HELP FINDING VAMPIRES!, Friggin' Mage's Guild Suspension.... Options

[Lord Skeletor]

Due to a game glitch on the X360, I saved my only copy of this game where this wizard was guarding a chest that I need into. I can't lure him away from it or get him to move.
My only option was killing him. So...I killed a member of the mage's guild. The penalty was to bring back 20 Daedra Hearts and 20 Vampire Ashes. The only problem is...is there IS NO MORE VAMPIRES that I can find to complete these requirements.

I've killed the vampires in the Imperial Sewers, Memorial Cave, and Redwater Slough.

I cannot kill the vampires in Bloodcrust Cave, because it will create a paradoxial bug which won't allow me to complete a Mage's Guild quest which requires me to "clear the vampires from "Bloodcrust Cave." I've tried. The count simply never shows up to give you the mission. This is really irritating.

Anyone got any clues or suggestions where some vampires might be hiding?! Thanks!
I just need to kill 6 more.