first..
the person that says he did the 2 dvd backup by himself is a liar..
because that is a dvd-9 and you need a rip kit
second i think he downloaded the dvd5 rip
the game is splited in 2 dvd
and one of the dvd is screwed because later was
putted online a repack for it..
so maybe you find the repack reason on the dvd
or maybe is a Bad Burn..