The most common "issue" isn't a glitch at all—it's a regional difference in controls. In Japanese games, the ( ) is "Confirm" and X is "Cancel".
: Since this is a Japanese title, the button functions are swapped compared to Western games. Use Circle (O) to confirm choices and Cross (X) to go back or cancel; selecting the wrong one often prevents the save from completing. Memory Card Formatting : battle stadium don save data