Hah. I was going to go back and try to finish that one (currently VR7 now). Guess I will wait...they even said they fixed it in the patch notes twice now?.. :'(
Worstluck - Breton Nightblade"Some of us refused to bow. We knew the old ways would lead us back to having a kingdom of our own."
―Madanach Elfluck - Dunmer Dragonknight "When I will walk the earth again, the Faithful among you shall receive your reward: to be set above all other mortals forever. As for the rest: the weak shall be winnowed: the timid shall be cast down: the mighty shall tremble at my feet and pray for pardon."
―Mehrunes Dagon Deadluck -Imperial Templar "Men are but flesh and blood. They know their doom, but not the hour"
―Uriel Septim
I completed this quest last night from start to finish. At first it was bugged for me also, however I relogged and waited for a minute on the character select screen. Then I came back in game, made sure I wasn't in combat and then pressed "Interact" and touched NOTHING. My character walked over to the stone and at first I thought "Oh darn it..." however after 5 seconds of touching NOTHING my characters arms flung wide and he attuned the crystal with his quantum resonator.
So it worked for me but I am wondering whether this 5 second delay is what is causing the issue, people are bugging the quest out because they tap the interact key several times.
After i logged back in I tapped "E" once only, and it worked.
I hope this helps you guys.
"Go fiddling with any locks around here and we're going to have a real problem"