DVD Shrink Freeze Problem

I use DVD shrink and have a NEC 3500a external burner with the latest firmware and every time i burn a movie it freezes at 99%. It is not my computers fault because i have an internal burner also and it works fine. What do i need to do to get it to stop freezing at 99%?

does this freezing happen when you burn with any other program?

I only use the one program