I am hoping this next release will resolve the issue.
I did have one of our OEMs finally be able to reproduce this issue, to a small degree. Who could copy two audio CDs, and then it would fail on teh 3rd. But if he closed Nero Express and then reopened it, he could then copy 2 again before it failed.
I could never duplicate this issue, but I did send this OEM a beta release of our Nero 7.2 and this seemed to have resolved his issue. Though our Engineers were not aware of any 'fix' that was done intentionally to address this, as they have not been able to duplicate this symptom in the QA lab either.
I hope the release coming in the next 3 to 5 days will address this. If not, I need to go back to the OEM and look at that system and see what he might have done to change the outcome.