As far as I can remember it is + - like this:
Open the GP4.exe file.
On the left side you will find "NT Header | File Header". Click on "File Header".
On the right side click on "click here".
Now you need to enable "App can handle> 2gb addressset". Next, click in "File", then "Save".
Original topic for reference => [
www.grandprixgames.org]
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RELEASE => Physics (under FIA Technical Regulations)
MagicDatas? Setups? Pit Stop Strategies? Track Specific Performances? Up2Date GP?
Power Torque Curve? Where's this stuff? All download is available at ..