I recommend going back to Nero 6. I found 7 to be unreliable.
Also be sure to go back to NeroVision 3.
Nero, like so many other software companies, let their customers be the beta testers. They may get the Nero 7 bugs worked out in a year or so. That's how long it took with Nero 6.
Fav quote - "Experience is whatcha don't get 'till ya don't need it no more."
System - Athlon 1.4GHz, Win98, Hauppauge PVR250 receiver and compressor.
Software -Magix Movie Edit Pro 10, Nero 6 + NeroVision Express, Moho 4.61, PSP 8.1, Bryce, Quicktime 6.52 pro, Goldwave 5, DVD-Lab.
Cameras - Panasonic GS9, Canon ES8400V, Canon EOS D20 and Canon A70