Problem with some NDS roms

When I put some Roms on my R4, I start the games and it says: Saved data could not be found please turn off the console or reinserte the game. For example, Fifa 09, COD world at war, Madden 09 doesnt work and many other games. Why?

I don't have an R4, but generally the fix is to see if the games need an ARM7 fix. Google that.

or you may have the old version of r4.
cod waw works great on 1.18