I'm having the same problems. I can wait for a long while to join a race and when it's about to start I get chucked out to Windows. No explanation, just a dialogue box asking if I want to play Grid Autosport or Grid Autosport with Touchscreen. I was already playing!!!!! I have bought all Codemasters racing games right back to TOCA & Colin McRae. I won't be buying anymore!! It appears that Codemasters are quite good at taking me money and then leaving me high and dry. I would love a comment from Codemasters but I doubt they can be bothered!