...at a location besides the Bloodlet Throne near Falkreath?

Just wondering...all the internet info on him states that he's at the Bloodlet Throne (details even given...). But this Dengeir of Stuhn guy (he apparently was the former Jarl of Falkreath) wants me to kill this Vighar vampire and the location he gave is the South Shriekwind Bastion, NOT the Bloodlet Throne.

Let me know...I already found the Bloodlet Throne when I was mountain-hopping and I'm almost positive that I killed a Master Vampire there--but I can't recall what that Vampire's name was--although the name "Vighar" sounds mighty familiar.

But if I already killed him, then why is Dengeir of Stuhn giving me the mission AFTER the fact? Am I missing something here?

I know this game has its glitches but I've been 1 of the lucky ones and haven't encountered any so far. Is this my first one? Or is the internet info about Vighar being at the Bloodlet Throne incorrect?

thanks in advance for the help! I don't want any glitches!

Getting a quest to kill a dead person is somewhat common in Skyrim. For example, my Khajiit assassin gets the quest from Annekke to kill a bandit leader. She always points me to Uttering Hills Camp. Problem is, I've already done the Summerset Shadows quests, so the marker just points to Linwe's corpse.

Maybe, as I don't really know, Bloodlet Throne is the closest vampire boss, so the game usually chooses that area. Since that boss may already be dead, it's choosing the next closest? I would save before getting the quest, follow the marker and see where it ends up.

The quest was to kill Vighar specifically? If so, then it's probably just a radiant quest location bug.
The location was probably randomly chosen.

It could be a bug. I had a bounty quest yesterday from Falkreath that pointed me to Scunda's Shelf and not Scunda's Kiss. I had to console my way out of this one. This never happended to me prior 1.4, so I'm not sure what is going on at the tech support in Beth at the momment.