ff9 corrupted saved games with ppf

[pilawhitetrash]

i successfully burned ff9 and it plays fine...i added the ppf with a +23 trainer from mega games and that works fine at first but for some reason after i save it a few hours into the game the next time i try to load the thing it says corrupted data on the saved file....i know its not my memory card because it works fine for other games....does anyone know if the ppf from megagames for the U.S. Ntsc version is messed up or something? its really wierd...i used a ppf for legend of dragoon and it worked beatifully so this is not new to me....any suggestions would be appreciated...thanks in advance