Okay, one day I was playing my Sapphire game on my GBA at one of my sister's football games. (She was a cheerleader.) I was Surfing and was just getting ready to go into battle with a swimmer girl when the screen turned white and nothing happened. I turned the switch off and back on, and when I went to play it again, a message popped up that said "The save file is corrupted. The previous save file will be loaded." and it took me to the menu screen. That happened every time I tried to battle a Trainer, but it did stop. Was this a glitch or something?