Are you backing up the game through the xbox with a network, because xbox games cannot be copied straight from a computer, there are read backwards and thus can only be copied from and xbox with a modchip over a network. Check here for the whole procedure: http://www.xbox-scene.com/articles/iso-backup-guide.php
Wait a minute, are you trying to back up an xbox game, or a cd, because if you're trying to copy a cd and you get that error that guide will do nothing for you.
sorry I am new to this... so I might not be wording this correctly... I am loading the xbox game in my pioneer A04 DVD-r opening recordmaxnow 4.5 and left mouse clicking to create an IG. I set speed to min, eneter a file name and click start, it reads approx 50% and then I get the error.