Nero sucks period, I used to have it and had no end of problems like you're alluding to here.

Easiest solution!  Bin it and get "RecordNow" instead!
It's very easy and intuitive to use and has so far never given me any problems!

I dare say others will disagree with what I've said!  [shrug].

Injustice will be avenged.
Cofiwch Dryweryn.