You got me. A search for that phrase turns up...this thread. OK. Fine.
When you say 'Nothing has worked', do you mean that when you try to get past that point you get the same thing again and again?
More importantly, perhaps, when you say 'Nothing has worked', have you tried uninstalling the game and reinstalling--using the Quick & Easy installer, preferably, and having copied your saved games to a safe place--or is that something you haven't yet tried?