I downloaded a Sonic Riders Zero Gravity Torrent and i downloaded successfully. I burned it on a DVD-R disc at 2x speed with IMGBurn and i loaded it and it said DVD Error -1. I did the same thing with th same brand disc(office depot brand) but this time i burned it at 4x speed and it said DVD Error -1. This time i used a memorex disc and burned it at 3x speed and the same thing happened. How can i correct this? Also, i downloaded two other games using the office depot brand and it worked perfectly.