Adv. Dupe in SP

[Danny The Magical Turnip]

When I want to go to ADV dupe in SP, I get an error and can't go to the folder or anything. I forget the error, but is this happening to anyone else? It does work in Multiplayer, though.

[Azrael]

Make sure you haven't got a pirated version. If you have,

• We can't help you
• Die in a fire.