I've been trying to start a multiplayer (not dedicated) server through the latest unstable patch (42.15.2). Every time I try to even launch the server it just terminates it and it won't start. I had mods on but I tried disabling them and it still doesn't work. Please help!
#Co-Op Unstable Game just terminates right away
forest finch
gritty sand
if a fresh save doesn't load...
copy/move your old save somewhere if you care to keep it.
then delete your whole Zomboid folder, reinstall the game, verify the integrity of your game files and try again.