Topic: Please help

I have an action replay for my Ds Lite. When I put in a code that was supposed to fill my Pokedex. All it did was make it disappear!!!! (When I go into the game menu, the Pokedex option isn't there) How can I fix this???? Can it even be fixed????

It's one of the curses of using a hacking device. Unfortunately there's not much you can do

What code did you use and what version/region?

As long as you didn't save the game, your save file should be file.

Unless it deleted and/or corrupted the save file. That happened to my brother once.