[Elves of Lineage]

i support this idea as well and i agree with journeyman comments

[Skyrim crashes on completing Potema quest]

I had the exact same problem. As soon as I defeated Potema, and the swirling lights disappeared, the game crashed to desktop. I tried several different things to fix this, but nothing worked. I repeated the quest 3 times...same problem. The only thing that worked for me was to do the console command "player.moveto" command as soon as the quest showed completed. It took me somewhere else, then I just retraced my steps through the quest again...all enemies being dead. As soon as I got to the final room, the swirly lights were stuck in a weird "frozen in time" way. I was able to get the skull and complete the quest at least. I never figured out what caused it, but at least it got me through.

 

if you have replaced the Yarlscloths02 (or whatever yarls cloths that Potema wears), the game crashes when she transforms to a dead body.

Yes.. this is best answer. As Potema "materializes" she needs yarlclothes03. Any texture mod here will crash game. Remove this folder and it doesnt crash. If you MUST have your custom texture you can drop it back in its folder after you have her skull safely in hand. :) This fixed mine! Thank You. Hope this helps others as well.

 

This fixed mine as well. Thanks for providing a solution!