So my game keeps killing itself the moment this line pops up in my Papyrus logs.

[06/13/2013 - 12:40:34PM] warning: Property DLC2EbonyWarriorEquipment on script DLC2EbonyWarriorScript attached to (04030CC9) cannot be initialized because the script no longer contains that property

And I don't understand why. From what I can tell it's just a script to add bloody iron arrows to him. I'm not anywhere near him at this point; he's waiting at his Last Vigil, yet I'm halfway across the world in Lakeview Manor and this script bugs out and shuts down my game. I'm sick of it and I don't know how to fix it.

I've got the unofficial Dragonborn patch, for all the good it does me. TES5Edit says not a single mod on my computer touches upon the Ebony Warrior, and thus his scripts.

Keeps killing itself you mean CTD?

Yeah. When the game crashes, I take a look first at the Papyrus log, and it keeps ending at that very line. On occasion it's another game issue that causes the crash... but I've since fixed those and it's this one that keeps crashing my game or else giving me infinite loading screens.