Nayru

Thanks a lot, BlackShark! Solved!!!

Now I am the one who is confused. As I said before, I have no idea what to do to continue playing because the game no longer opens. Instead, the message above (in the title) appears. I have never used PKhex before, I am just asking for help with it.

Hello there! I am brand new using PKhex, so I don't know what mistake I may have made. I used Pkhex to transform my dratini into shiny and added some rare candies to my bag and saved the changes. Every time I try to open my save (HeartGold) in Desmume the following message appears: "The rom header is invalid. The device size has been increased to allow for the provided size". As a result, I can no longer play the game. Can you please help me with this?