This sounds like another version of the infamous "A Favour for Lord Vader" bug. If so, there's nothing you can do. It might help to load an older savegame, but you might have to start over from the beginning. I'd hoped they would have fixed this in 1.04, but apparently not.
"We think in language; therefore, the quality of our thoughts can only be as good as the quality of our language."
-- George Carlin