Hi,
I tried everything, but no matter what, the game crashes when I try to enter Gyldenhul Barrow.
I have the key and all four pieces of the Deathbrand armor.
I tried the key, picking the lock, the key with the armor on, coc DLC2GyldenhulBarrow01, movetoqt DLC2dunHaknirTreasureQST, going back to (very) old saves, nothing works.
Any help would be appreciated.
Thanks.

OK, well, after a lot of trial and error, I found that coc works only if I'm not near the entrance, it worked from the skaal village, and only if I typed it in rather than using a bat command.