I don’t think it’s an actual crash, it’s simply the [autoexec] section in expert settings pointing to the wrong directory. Adjust the path after “mount c” to where your dos games are stored, and it should work.
You can delete the “exit” command, or comment it out with a #, so Dosbox won’t exit automatically. I just put it there for convenience, so I drop back to the main menu when I quit the game.