Why wont my Emulator load pokemon

[emulation-dude]

I have No$gba emulator and it loads but when i go to load pokemon diamon it loads a blue screen and says :

The data could not be read


Please turn off the power, then remove and reinsert the DS game card.

But i dont have a game card because its an emulator and yes i have restarted the emulator and have redownloaded both of them about 20 times now and its still the same problem ... can anyone help me?

[random]

sumthing simmilar happened to me it loads n all but when it shows load game nd start new game i click on continue but both screens go black and doesnt work. can anyone help?

[RockmanForte]

Please read somewhere in the pages right here. I explained already about "The Data could not be read blah blah" and it can be resolve. Please look at some pages relate to no$gba ok ?

[Chocolatcookieshake]

To fix this all you have to do
is go to emulation setup

and change the NDS ( nintendo ds ) backup media option to
FLASH 256KBytes

Restart the game and now it should work
hop that helped