this might not be any help; I have adaptec software and haven't done much copying
I do close all other running programs while I run it - antivirus, screensaver, anything else in the tray that might kick in and interupt the process. When I have had problems it has often been the first disc in the spindle of blank discs, as though it got damaged during delivery
Otherwise I knock down the write speed to ensure I get a copy. Are you copying the whole disc at once or track by track?
Good Luck
roger