[Andrew Kocetoks]

I tried to join the GT3 race just now at the Chang International track, but, just as I join game says that there is "Invalid Checksum" and I am being instantly kicked out. Regarding the Chang International track - I just have downloaded it from the provided racedpartment link and installed it using content manager. Despite that, this problem keeps reoccuring. Can anyone be of help regarding this issue?

Thank you in advance.