Kaiju Buster

I downloaded this game, but I get a message when trying to start. Doing back up memory, do not turn off. But nothing happens after that. Can anyone help me?
Thank you.

Download the game again.

Are you playing with an emulator or a flashcart?

You'll need to use this patch if you haven't. http://anandjones.romulation.net/files/ds/patches/kbj.rar

Thanks for your reply. I am playing on a DS with a M3 DS Real card.
I will try the update.Thanks again.