Alright, I've used the KSS (I think that's what it's called...) It's a Knight's Save Game Editor and in the Freedon Nodd Tomb, you know when you go fight those four Sith Masters?
Okay, when he says "release the power" or similar to it, lightning shoots out and then the battle begins...
Except there is one problem...
The lightning sticks to one Sith Master and that Sith doesn't join the fight. This means I can't progress passed the Freedon Nadd temple and it's beginning to PISS ME OFF.
This happens if your character is too high level (or if you are using a difficulty booster mod) when you reach this place. The problem is that the cutscene applied 1000 damage to the Sith to kill him when the ritual is broken off.
Since enemies go up in difficulty and get more vitality points as the player's level increases. Thus if your level is too high (or you use a mod that boosts enemy VP), the Sith will have more than 1000 hitpoints, and thus won't be killed as he should.
This modified script (
http://www.algonet.se/~stoffe/a_ritual_sc_1.zip) should fix that problem, if unzipped into override and apply enough damage to kill the Sith, though you'll have to reload a savegame from before the ritual cutscene triggers.