That could be it as recently I got some BSODs. I think that hardware investigation might be back on the menu. Thanks a lot of effort anyway and best of luck

As stated in the post - I did not update my game nor my mods. Everything remained as before, checked the saves on two PCs - same issue on both of them

Updated.

Hi, I am playing with a couple of mods.
I am unable to load my latest manual save and all three autasaves - two of them give me the same error message as the manual one, and the oldest one completely crashes the game.
I can still load the one being from 1h:30m earlier from the same world, no issues ...