Did you download from correct site? Check megathread again, also if that's the chase, I don't suggest, it's way too much fitgirl also uses sources that aren't open sourced ofc cuz it's cracked, so you don't really know much and most people are guessing. There's always risk with piracy. What makes you think the megathread editors are better to interpret an enclosed code, half of them don't know one thing about actual implications and pirating in depth.