Guys I had all the same problems as you but the secret was the patched version of antiblaxx. Install this and over-write the main anti-blaxx.exe with the patched version, set up as shown in a previous picture in a previous post. Set your motogp.exe file to windows 200 compatability and use the mini image as provided on from GCW.
If you follow this to the letter it works 100%.
