first you should check if you accidentally deleted diamond from the action replay.if you did your going to have to re-add it. i hope this helped
When you load up action replay, uncheck the box for the shiny Pokemon code before starting the game.
If you mean on the national pokedex, there is a VERY long list. In Sinnoh Dex, unknown and riolu (baby lucario)
Then it might be broken.
You need a action replay to do that and trust me i tryed before so trust me.
You cannot obtain the Azure Flute in Pokemon Diamond, Pearl, and Platinum without the use of an Action Replay.
if you want a rayquaza go to your PC (in Pokemon) before that use the R4 or action replay put hoenn legends
yeah that works but on my action replay before i gto it i already killed it i went back and it was there and the same thing happned to me for giratina
No
It's because the game you have inserted isn't in your ar's codelist if you have the program you can drag and drop the codelist from the "MY CODELISTS" section into the "NINTENDO DS" section. That should solve your problem.
If you used an action replay, it may crash. This happened to me. But all I did was wait a while before playing it again and it was fine.
Yes you also need to beat diamond as well.
You can't? I've done it on my Diamond game before with no problems.