EDIT: DISREGARD! Worked on 4th attempt. I guess the server got flooded with >>>>>requests.
Steam workshop content was added to the dev branch today. I subscribed to the example addon. The game hung up (no crash, just can't do anything) on "accessing data from steam 1/1".
Restarted the game, immediately hangs. After 1-2 minutes, it times out (it does not recieve the addon).