GDSMux is stopping

Faced a problem, generate a script, I do everything according to the instructions, and GDSMux either stops at 8.0% / 8.4%. Or I get a video without sound, I wanted to impose sound from the original by myself, through editors, Camtasia freezes, Premiere Pro writes "the importer reported a generic error" Some online editors also do not accept, although I can open video. Or else there is an error in GDSMux (80040265).
Using SVP 3