vsutils again no longer detected by VapourSynth (now after upgrading from R62 to R63)

[SilSinn9801]

This is a follow-up to http://forum.doom9.org/showthread.ph...hlight=vsutils where I had asked about vsutils no longer working on VapourSynth R58+ unless some modifications were made to its outdated-since-2016 code. These mods suggested by Julek allowed vsutils to work on my end, up to R62.
Now, late last month I upgraded from R62 to R63, & when I try to run again a script that worked for me on R62 early last month, I again get an error about VS no longer detecting vsutils (even when it’s present in the correct Python 3.10 path, C:\Program Files\Python310\Lib\site-packages) when previewing it in VapourSynth Editor r19:

Failed to evaluate the script:
Python exception: No module named 'vsutils'

Traceback (most recent call last):
File "src\cython\vapoursynth.pyx", line 3115, in vapoursynth._vpy_evaluate
File "src\cython\vapoursynth.pyx", line 3116, in vapoursynth._vpy_evaluate
File "D:\fakepath\RWBY9821.VPY", line 3, in 
import vsutils as vsu
ModuleNotFoundError: No module named 'vsutils'

& in VirtualDub2 44282:

Avisynth open failure:
Python exception: No module named 'vsutils'

Traceback (most recent call last):
  File "src\cython\vapoursynth.pyx", line 3115, in vapoursynth._vpy_evaluate
  File "src\cython\vapoursynth.pyx", line 3116, in vapoursynth._vpy_evaluate
  File "D:\fakepath\RWBY9821.VPY", line 3, in <module>
    import vsutils as vsu
ModuleNotFoundError: No module named 'vsutils'

What did R63 break now this time since R62?

For additional context, this is how I am trying to import all my scripts:

import vapoursynth as vs
from vapoursynth import core
import vsutils as vsu
import havsfunc as haf
import functools
import sys
import math
vsufuncs = vsu.vsutils()