Crash DVD encoding and Vapoursynth

[Devilman1]

I don't see any issue with the script. => Does the Vapoursynth Preview work, or does it show an error?

It doesn't start. This is the error:

Failed to initialize VapourSynth environment!
Failed to initialize VapourSynth environment!
Failed to initialize VapourSynth environment!
Failed to initialize VapourSynth environment!
Failed to initialize VapourSynth environment!
Failed to initialize VapourSynth environment!
Failed to evaluate the script.

but it did the same also with the previous encode that went fine and so I was not paying attention to it.

I activate DGindexNV and now is crashing at this point.