xenosaga

I purchased all three games recently from Gamestop, all used of course. For some reason, my PS2 cannot read Ep 1 but can read the second game just fine. This is the second time i've purchased this game, and the second time i've had this error. I dont know if its the same copy, but i bought it...

the 6 parts that are hidden in the entire game tell and be specific or low rating and no best answer