helenmoore3 It sounds like this particular save might indeed be corrupted. This can happen without mods or custom content, although mods and cc make it more likely. How large is the save, or rather how large was it before the most recent time you saved? I ask because that's another source of corruption: sometimes saves get so large they appear to kind of disintegrate.
You can see the sizes of the save file and its backups in Documents > Electronic Arts > The Sims 4. You can also try recovering a backup from there. Here's how:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
Hello thanks for responding. The save file is showing as 8,998KB with 5 “save.ver” files of 11,700KB each. I had only played through spring - winter on normal setting so not a long game save as I started a new save for the nature event. I’ve deleted the old saves now and just hope my new saves don’t corrupt, I have been using save as this time round
