# Check that Stardew Valley is up to date and your save is loaded in co-op mode. The host needs to go to the Co-op tab in the main menu and launch the save by clicking "Host (farmname) Farm". Loading a save through the regular load game menu, even if cabins have been built, will launch it in singleplayer. | # Check that Stardew Valley is up to date and your save is loaded in co-op mode. The host needs to go to the Co-op tab in the main menu and launch the save by clicking "Host (farmname) Farm". Loading a save through the regular load game menu, even if cabins have been built, will launch it in singleplayer. |