well, i disabled my avast antivirus (it seems to have problems with detecting some game files as potential malware), re-downloaded the game, extracted it, but this time it was crashing at the launch... then i created a folder named "infogrames" in my program files folder, and extracted the game into there... and now it works
can't remember it being that complicated the last time i was installing the game on my drive tho
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For a list of EVERY download for GP4, look here:[docs.google.com]