Please help me. I messed up. I went to Durlag's Tower before Ulgoth. (Spoilers ahead)
When I defeated the Demon Knight, I either left the Soultaker dagger in the room OR I sold it, not knowing it was a quest item needed to face Aec'Letec.
I searched all of the Tower... nothing.
I checked every available person I knew who could buy items from me... no dagger.
So, my friend helped me get the EE Keeper. We put the dagger in my inventory in one of my save games. It's there now.
When I talked to the Hurlan character in Ulgoth, he still reminds me to go get the dagger.
If I had to, I could go back to an old saved game and redo much of my game... I did almost everything in Baldur's Gate. I'd love to avoid redoing all of those quests!
Am I doomed?