I have the same Fab Express 18.104.22.168 problem as lunchb0x, complete burn vs. main movie burn using VSO, and an immediate error when trying to write using Nero (Failed when writing DVD: 4015). I have Nero 6 installed.
Here's an interesting twist: Sometimes I CAN burn a complete movie (VSO) with no skipping, freezing, or chapter problems. Yet other times I get all of the skipping etc. problems, using the SAME ORIGINAL DVD, same blank media, same system. Why would it work some of the time?
(And don't say it's the media, I'm not having these problems with DVD X Copy Platinum...)