Fateful

When you try boot launch the game, it will appear to work then "save" a world (just shows the save screen). Afterwards, the game closes and crashes bringing the launcher back up saying "Game Crash: It looks like you're using an unsupported modified version of the game." Followed by the crash report .txt flie inserted here crash-2019-06-12_18.07.24-client.txt. Any thing anyone can do?