Ok, this is strange :)
I downloaded a fresh legit install from Steam, and used your files and it works! Yes I can say it works!
My previous fresh one was a "not so legit" one, because TexMod and OpenTexmod won't work on a ubi/steam install !
I would bet it was just a matter of a game being up to date, you datapc.forge having a slightly different hierarchy than my "old" installation i'd guess!
Mr_Bloodjack
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