my saved games

hi guys I got a problem well i downloaded tales of the world awhile ago and got pretty far in it but i stopped playing it and deleted it off my psp. well i put it back on two days ago and now for some reason I can't load my saved game that I have on my memory stick. I mean it's there i just can't load it, every time i go to load my game it gives me the same message there is no data to load. if anyone could help me that would be great I don't mind starting over I just don't want to.