can not backup ps2 dvd games

[jamex]

I have the pioneer 106d dvd writer and using recordnow max software. when i try to backup an original ps2 dvd game with build image it start read gets 3rd of the way and stops then says device error (could not read sector .......).

I have no problem copying a backup using the same process
i go to build image press build done ,
burn image

anyone out there can help me
thank you