Hi I've a similar problem. My savegame location was fine until today when I was loading ingame and no savegame appeared. I created a new game to see if I could save and all was normal. When I loaded again only that save was there.
I noticed in the metadata folder that only the new games I saved appeared there. So I renamed one of my previous saves and renamed it to default.sav and when loaded ingame it loaded correctly.
Is there anyway to quickly restore all my savegames.sav that don't have the corresponding .dat on metadata folder? And it's strange that folder only has the newly saved games. Where did the previous ones go? I didn't delete anything...
Hope this helps
Thanks
