Arbitrary files in workshop

Sooner or later I better learn how to actually do this. I've tried a few things, per the instructions, with a file in the following directories, but every time have received the error above and none have uploaded a file with any size which when subscribed to actually provides the file.

X:\Program Files\Steam\steamapps\common\Children of a Dead Earth\Mods\WorkshopExport\Data\Materials
X:\Program Files\Steam\steamapps\common\Children of a Dead Earth\Resources\Mods\WorkshopExport\Data\Materials
X:\Users\X\AppData\Roaming\CDE\Mods\WorkshopExport\Data\Materials

File is Metals.txt, and contains a copy of my mod for vanadium with the material renamed to Vanadium Test so it should show as a separate material in the infolinks if successfully subscribed to.


Tagging Fgdfgfthgr since you successfully uploaded the Chinese localisation.