Check the Nero forum (recording software) for "Frame out of. . ." errors.
Problem was Nero.
P.S. "Doctor! It hurts when I move my arm THIS way." Doctor said: "So, don't move your arm that way." Seriously, though, I've oven had Nerovision to some crazy stuff, including getting stuck and powering off the computer. You may try exporting your custom movie into a dvd sized Mpeg 2 file OR a series of files/chapters. If you can export your digital video files into dvd compatible format, then you're home free. I think the problem is that Nerovision can't quite do it in just one step.
Next, get the [more compatible] files up and build menus with Nero Express. Taking this in two or more steps may help to keep Nero lockups down to a minimum.