Try burning the project to the hard drive. Then you won't have to go through that time wasted during testing. You should get a NeroHistory log when you do that. You are searching for just NeroHistory, right? It should be somewhere in a Nero 6 folder., I believe.
If that works, then burn the image using NeroBurning ROM. Make sure you look for a Burn Image option.
In general, folks seem to have problems with using media the burner does not recognize (need firmware update), or bad media. Also not having the DMA turned on for the burner could cause problems, and burn the project at a slow speed, like 4X.