Wow. This is REALLY frustrating! I love this game, but it is completely broken when each time I boot up my PS3 and wish to continue the game saves are not read. The game thinks I'm playing for the first time. I decided to keep reloading the game and after the 8th time it found my game save. I played for a couple of hours and then shut down. Today I wanted to continue and it is not reading again. Tried to reload the game several times and it won't find my saved files. This is ridiculous.
I got this fix from ps3 site. Maybe it will help you guys.
Thank you for contacting Sony Computer Entertainment America LLC (SCEA). We can definitely assist you. We may be able to correct this issue by deleting Game Data Utility for the game experiencing difficulty. This will not delete your saved game.
?Go to the Game icon on the XrossMediaBar? (XMB?)
?Select Game Data Utility
?Find the game title
?Press triangle, then delete.
After deleting the game data, go into Safe Mode and select option 3 (Restore File System). The information below will assist you in accessing Safe Mode.
Using Safe Mode
Article Link: http://playstation.custhelp.com/app/answers/detail/a_id/1488
Once this process has been completed, attempt to load the game and your save again