If CDR-win is making bad images, then either the source cd is bad, your cd-drive is bad, you need an ASPI layer installed, or its something else I can't think of. Good luck!
Or you have a dodgy serial number installed
From what I remember reading, CDRWin won't tell you if you have a blacklisted serial number, but it will write/read garbage data instead. Of course, this could be total bullshit or it might not be...