Kursplat

I put TDU back in after not playing for some time. When I go to play my existing game, it warns me that my game contains downloadable content no longer available and asks if I want to go back to the marketplace. If I say no, it goes back to the "Start" screen and when I press start, it starts to load and then locks. If I say yes, it takes me back to the marketplace, then I restart the game and the cycle repeats. Does anyone know if it is possible to keep my saved game and not have it lock? Is it possible to "unload" the DLC that is no longer available? I'd hate to have to start a new game and start all over again. And how do I make sure that *NO* DLC is in my game, as I don't want this to happen again. Thanks for any input.