Hey
you may have already figured this one out, but the new ghostbusters game on Ps3 althow awesome does have the glitch where you cant reload where you last left off, I have figured this out thow,
If you plug in your mp3 player or usb card in the usb slot and copy the ghostbusters save data onto it, it continues the game from your last point with all your scans trophies enhancements intact etc the mp3 player acts like a memory card this allowed me to complete the game and i was getting very frustrated