Have you tried ImgBurn? Also, can you read BR Rom? I'm not sure if XP comes with native UDF support, which is the disc format of BRs. If the drive won't read BR ROM, it may be you need to add support.
What versions of Nero and cyberlink are you using?
Thanks for the response.
(1) not tried ImgBurn; downloading now (will post update when done)
(2) can read a BluRay fine
(3) Nero is Express Essentials 7
(4) Cyberlink Power2Go BD v 126.96.36.1991
(came with the drive)