Okay, unfortunately your save file has become corrupted. The only way to counteract that is to use back up saves (instructions here). This means you'll lose a bit of progress but its all we can do in this situation.
Are there any error messages showing? If so what are they.
If you upload your save file (instructions on where to find that are here) it might help us work out what your issue is as well.
The file you've attached is a backup save from before fighting Blake. If you upload the game.rxdata file from the same folder where you found that I can fix it for you without you losing progress.
Download this file and replace your one with it and it should work.
Game.rxdata
You don't need to be up to Ciel to update to E16. The stage of the game you're up to will be pretty much the same, however there will be some extra things and lots of bug fixes, so I'd recommend updating now.
I passed my L plate driving test today! Unfortunately I didn't have the right ID with me the first time so the 5 minute test took over 3 hours to complete due to me having to get to and from the place twice.
You shouldn't need to change any of the back up saves (which are the numbered ones)?
Could you give a bit more detail on what the problem with replacing is because currently I'm not sure what the issue is.
Njab's point was that there is nothing we can do to fix corruption. Backups were included as a way to combat corruption and there is nothing we can do about corruption except for recommending back ups.