With now mature and Haunted Chocolatier on the horizon, ConcernedApe has stated he will not break existing saves but also won’t maintain legacy builds indefinitely.
For handheld users, the compatibility version is often required to get the game running. Set Steam to the "compatibility" Install/Reinstall Stardew Valley in PortMaster. Copy the updated game files from your PC Steam folder ( steamapps/common/Stardew Valley ports/stardewvalley/gamedata folder on your SD card. Stardew Valley Compatibility Guide Stardew Valley Compatibility Version Download