K_EResultFail Take 2
Here's the file for The Devs
By any chance, do you have the folder to the map open while trying to publish? There's an issue with that, on Windows 10.
how does one find out?
It would mean you manually went into your Castle Story folder /info/ugc/maps and had the folder of your map open like that, then you alt tabbed back into the game and did your stuff.
no, I didn't have any folder out or open in different windows
Can you try creating a new map and publishing it on the workshop? Just a test map, to see if you can publish at all.