- Known issue: Steam client modifies the steam_appid.txt file incorrectly. In case of issues, verify its content is: 107410
- Known issue: Sometimes the add-ons are loaded from the wrong installation (e.g. main game)
- Try adding -mod=curator;kart;heli;mark;expansion;jets;argo;orange;dlcbundle;dlcbundle2 to your arma3server.exe shortcut