Having a massive problem with this quest. Got to Nahkriin and killed him, took everything he had, tried to activate the dragon seal and nothing. The quest marker is on Nahkriins body not the dragon seal so it won't let me continue. I've tried nearly everything. Just hoping someone can come up with something otherwise my 90 hours is down the drain. Second time I will have lost that much time on a Skyrim file. Really really frustrating. Any help is appreciated. If people don't understand what I'm trying to say I can try and post a video to show you my problem. Thanks in advance people.

That's exact the same post as "Can't Activate Dragon Seal."

I know it is, but I wasnt getting any replies so I thought I would try and explain it a little better,