Can't Save - Archmage Rezo

[Throwaway]

Got Steam Version, Win7 64.

After defeating the Staff of Destruction in the Archmage Rezo quest i can't save the game.

To be more specific, after the fight the staff doesn't disappear and the fight begins again; Right at the beginning of the second fight Rezo begins the post-quest dialogue; Following the dialogue options gets me out of the tower but i can't save.

After some search it seem this bug is quite old, but i couldn't find any solutions. Help is appreciated. :)

[bugmenot]

The solution can be found here:
http://forum.1cpublishing.eu/showthread.php?t=13093

Simply kill all enemies before duelling the staff.

I've run into this error, too, and only then looked it up. That means I've wasted at least 2 hours of playtime after fighting the stupid staff since I didn't at first notice that save problem. Argh!!!