I'm having issues with MGS3 on my PS3

[Boom]

Okay, so a few months ago I was playing through all of the MGSs trying to unlock everything. At the time, I had no issues with playing the games on my PS3. Anyway, I played through MGS3, got all of the unlockables, saved the data, and stopped.

Recently, I wanted to play through again. But when I tried to load my game, the system failed to load the internal memory card. Tried several times and no luck. So I decided to just suck it up and play through again and get everything. However, when I tried saving the game, I had the same problem. The system wouldn't save my data.

Now, I went to the Memory Card Utility at the PS3 Dashboard. I have plenty of space on the hard drive, and it says my MGS3 file is still there. But I can't load or save anything for the game.

It's pissing me off.