well,
after reading this post i am a little scared.
today nerocmd did not burn either on dvd+r nor dvd-rw, you con see the code at

this is the important line
nerocmd --write --real --drivename %burndevice% --tao --iso %cdname% --speedtest --close_session --underrun_prot --import_iso_only --disable_eject --verify

--media_type media_dvd_any name.ext --error_log brennen2.txt

and the answer is:

NeroAPI reports: Track-at-once writing is not supported on this media.

what is wrong?

best regrets
Cristian Dvorak

btw, how do i change my profile name?