It was only a random occurrence. Sometimes you could be fine (I saved in Lumiose before I knew about the glitch and mine was fine), and others you'd just get unlucky. I've never heard of anyone getting it at the E4 though, but it just seems to confirm how random this glitch is.

So Heracross, download it. You never know when it might happen.

I'm really sorry this happened to you, Ay If you want anything bred for you, I've got a network of lovely people that would gladly help you out <3

I tell everyone that buys the game at work to download said patch. Cos pokemonz be awesome.