I'm not sure how the amazon download system works but how many installation files did you get to download? Was there one folder inside which there were 2 different folders? Any information of such sort will be helpful.
Also no , the digital download shouldn't require a disc.
I Know thats why I am so mad is because I know this is a DIGITAL download there was GTAIV folder and a rsc folder for rockstar social club I have already tried running it in admin mode and compatibility mode uggg paid $40 anyway if you have any idea's let me know thanks and I have windows seven 64 bit and like I already said I meet the min requirements to play the game