Cant Inport Subtitle & Crash

[Selur]

Installing an old version probably works Vapoursynth isn't used there.
Strange thins is that this all works fine here.
Also the Vapousynth script:

# Imports
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="C:/Program Files/Hybrid Converter/vsfilters/SubtitleFilter/VSFilterMod/VSFilterMod.dll")
core.std.LoadPlugin(path="C:/Program Files/Hybrid Converter/vsfilters/SourceFilter/FFMS2/ffms2.dll")
# Loading D:\Documents\Downloads\The Walking Dead s08 1080p.WEB-DL\s08e04 Some Guy 1080p-RARBG.mkv using FFMS2
clip = core.ffms2.Source(source="D:/DOCUME~1/DOWNLO~1/THEWAL~1.WEB/S08E04~3.MKV",cachefile="C:/Users/TonyJ/AppData/Local/Temp/22_19_40_4610.ffindex",format=vs.YUV420P8,alpha=False)
# making sure input color matrix is set as 709
clip = core.resize.Point(clip, matrix_in_s="709")
# Making sure input color range is set to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)
# stylefile should be at: C:\Users\TonyJ\AppData\Local\Temp\s08e04 Some Guy 1080p-RARBG_22_19_40_4610_05.srt.style
# Loading D:\Documents\Downloads\The Walking Dead s08 1080p.WEB-DL\s08e04 Some Guy 1080p-RARBG.srt using VSFilterMod
clip = core.vsfm.TextSubMod(clip=clip, file="D:/Documents/Downloads/The Walking Dead s08 1080p.WEB-DL/s08e04 Some Guy 1080p-RARBG.srt")
# Output
clip.set_output()

Looks fine to me and the encoding call:

"C:\PROGRA~1\HYBRID~1\VAPOUR~1\vspipe.exe" "C:\Users\TonyJ\AppData\Local\Temp\encodingTempSynthSkript_22_19_40_4610.vpy" - --y4m | "C:\PROGRA~1\HYBRID~1\x264.exe" --preset superfast --pass 1 --bitrate 3772 --profile high --level 4.1 --direct auto --qcomp 0.5 --aq-mode 0 --sar 1:1 --non-deterministic --range tv --stats "C:\Users\TonyJ\AppData\Local\Temp\s08e04 RARBG_22_19_40_4610_08.stats" --demuxer y4m  --fps 24000/1001 --output NUL -

Looks fine, still there is some problem since x264 is complaining:

y4m [error]: bad sequence header magic

-> Does the Vapoursynth preview work fine?