problems with creating an iso

[johnny utah]

when i try to rip an image of unreal tournament, every single program i use gives me errors, can it be my burner is messed up? i can rip other programs. Theres no problems with burning, just reading, and i know my drive can rip unreal cause its done it before, but when i went to try it again, it gives me errors. I'm using my burner which is a sony crx 145 to rip the cd, could it be that the lens is dirty or something? i tried ripping on my samsung dvd also, it dosn't work.