Hi! Sorry if this is answered elsewhere. I couldn't find any instructions on the Wiki.
I made a test Adventure in the engine -- just a Basic level with nothing to do on it -- because I wanted to understand what was required to publish and play a custom story. I've published it with all variety of Project Settings -- whether I'm leaving the default levels blank, or importing the existing Character Creation and Menu levels, or referring to them. I've tried every combination of settings I can think of. But even though my Adventure appears in the Mods menu, it isn't selectable when starting a new game.
I installed a custom story from the Workshop, and it appeared just fine. What am I missing? What are the minimum requirements for a custom story (not add-on) to make it selectable when starting a new game?
For reference, here is the Steam Workshop story I mentioned: http://steamcommunity.com/sharedfiles/filedetails/?id=1136564031