FAB Express won't finish burning

I am using the latest version of Fab Express 2.9.72 and it will not finish burning any movies that I try to burn using the VSO burning engine. It will get to about half way and then spit out an error of 4015. Anybody know what this error code means? I have uninstalled and re-installed to no avail. Any suggestions? I have tried using Verbatim, Ritek and Sony DVD + and - R without success. My burner is a NEC 3540. I have burned many movies with this burner using the free version of Fab and Shrink but no success with Express. Any help is appreciated.

4015 is not in the error codes for Express. Usually when Express stops it is because of a conflict with another program. There is a burning log that will open in the text editors built into Windows.