Why do Final कल्पना IV The After Years corrupt all saves?

Whenever I play my Final कल्पना IV The Complete Collection to my PSP and I play Final कल्पना IV and Final कल्पना IV ~Interlude~ it works fine.But whenever I play Final कल्पना IV The After Years and advance a little at Ceodore's Tale all my save data corrupt.Do आप know if it has a problem या something because it's really annoying.