[HELP] Upscale not completing

[Selur]

Okay, if the preview windows doesn't even open then there is something off with the Vapoursynth setup on your system.
Uninstalling Vapoursynth and it's filters (<- important) and reinstalling them again might help.

Cu Selur

Ps.: May be there is a error message that is visible if you create a debug output of you trying to open the Vapoursynth Preview.