Hi, once again I reply to myself : I've just found that my problem has nothing to do with the API itself.
I was able to reproduce the probleme with the nero GUI, or NeroCmd
It happens for a TAO burning.
It explains why the problem appears with the exemple 'NeroFiddle' and my program, given that the DAO flag is not activated in 'NeroFiddle' The default mode for the Nero GUI and for NeroCmd is DAO
So, my probleme can be reproduced with the nero GUI this way :
I open two Nero GUI, I set the TAO mode, and I burn data with each GUI on each drive (I have two drives on the same IDE controller)
When one burning ends, the LED of the the second drive flashes, showing that something is happening on the bus. Both burned CD are OK though.
However, if I set the burnproof mode off on each GUI, and I retry the same thing, one burning fails, and the Nero GUI for this burning says 'Invalid Bloc Address'. The log file repports an SCSI error.
So does it mean that I may have a probleme with my configuration, or my drives, or, is two drives on the same IDE controller a bad idea ?