I've seen nothing of the sort you are posting. Maybe you are trying to play online or something?
Your using cheats, news flash...you have already blew the experience of the game.
I've made sure that the game was running offline (changed the multiplayer setting to offline and even blocked the game from going online). I've posted the screen of the two messages that pop up ingame.
Then create a save you don't care about and then you can mess around as you please to see what and what does not work.