Konami is warning players of a potential bug that corrupts their Metal Gear Solid 5: The Phantom Pain game saves and makes them unusable. The bug affects all platforms of the game.
In simple terms, don't bring along Quiet as a companion for either Mission 29 or Mission 42. Doing so can trigger the corruption and kill the save file.
Konami apologized for the glitch, and indicated it would be working to patch it out in the future.
Metal Gear Solid 5 launched a week ago; Polygon scored the game a 9.0, calling it "a bittersweet but impressive send-off for the creator." Hideo Kojima is leaving Konami after nearly 30 years of developing games for the publisher. The reasons why still aren't known.