Sims 2 Castaways cannot access saved file

Hi,
I gave my niece an Acekard 2i for Christmas with akaio 1.5 on it and she is using a dsi.
She is able to play the game and appears to be able to save it but cannot then access that saved game the next time she plays.
hope someone can help.
thanks.

What game is she trying to play?

she is trying to play the sims 2 castaway - sorry I thought the name of the game in the title would be enough.
thanks