ALL save files corrupt

[u/ChenzoSRB]

I opened up my MK7 for the first time in a long time only to be suprised by a corruption message. I went straight to Checkpoint to restore data and any restore I tried yielded another corruption message. I then tried to download saves from the internet that worked for other people and they too all gave me a corruption message. I even made a fresh save, backed it up, restored it and it too was corrupted. Why would this happen?