A bug has been discovered in Castlevania: Lords of Shadow. It affects both versions, as a few PlayStation 3 and Xbox 360 users over at PlayStation Universe, Gamespot and Gamefaqs have posted complaints about the glitch, which erases your save game.
It's called the Unhandled Error and kindly informs the user their save is about to be wiped with the lovingly put together message, "save file corrupt, will now overwrite, press X to continue".
That's potentially hours of gameplay down the drain. The problem is that Castlevania: Lords of Shadow only allows for one save file per play, so there's no second save to full back on.
For now the only solution is to back up your saved game to a usb drive.