This happen now again in early evening race. I was able to join the first race what Gergely mention above but now for the evening race I, and many others as well, got the checksum failed error. I doubt it can be anything to do with the wrong mod version as couple hours earlier I was able to join and race normally and between the races I didn't touch AC.
EDIT: Nevermind, I just saw the thread in news section that mod has been updated all sudden http://www.simracingsystem.com/showthrea...&pid=31132
EDIT: Nevermind, I just saw the thread in news section that mod has been updated all sudden http://www.simracingsystem.com/showthrea...&pid=31132