Right, after several minutes it does start. The sky at the Nordschleife is filled with strange colors and black sections. Something went terribly wrong here. Try to exit to GT life again and it just freezes.
Wait, I didn't say that was definitely your problem. Did you actually try it? I don't know if your problem could be fixed that easily, I was just giving a suggestion.
I was having trouble with loading (Suzuka wouldn't load) somebody said re-installing all the updates will help (keep your game data save file backed up before you try it though). Suzuka works for me now I've got the updates re-installed (I had to because of hard drive failure ).