SOU - Missing Quest Swords

[Vygg]

In the elven crypt I've found the corpse that is supposed to have the sword that the ghost wants, but there is nothing there to pick up. I disabled the trap that was under it before examining the skeleton. Does the trap have to be triggered for the sword to appear?

Also, the Holy Avenger isn't on the skeleton on the floor. It seems to be the only thing that can touch the master monk and I'm getting a severe beatdown every time that I try to go in the tomb.

I installed the 1.69 patch that Bioware recommended for having SOU and HOU installed. I've tried exiting and re-entering the game to no avail.

Any ideas on why the swords are missing?