A port of the mod by Alexandriel that lets you complete the Daedric quest "Waking Nightmare" without killing Erandur and still keep the Skull of Corruption.
Mail file: download
Didn't you ever think it was weird you couldn't just take the Skull of Corruption after Erandur takes the barrier down around it? The game only lets you grab the staff after you kill him. This mod fixes that, and lets you snatch the staff as soon as he disables the barrier and begins his ritual. He will of course turn immediately hostile, so you can run away, pacify, or paralyze him and keep the staff without his death hanging on your conscience. If he doesn't die, he will eventually calm down and remain in the temple. He will immersively hate you for what you've done, too.