save files keep corrupting?

Hey there!

I believe you tried to repair the game, if not try to do that.
Also - can you try to save the game in a different way? I mean, instead of just "Save" the file, try to do "Save As" with a new name by adding another letter or number. It will make a new copy of the game. Then, delete the old save and try to continue with the new-old one that we saved as. 

You may delete your saves from: C:\Users\Username\Documents\Electronic Arts\The Sims 4\saves. 

@disneyniam   I suppose a bad CC or mod may be corrupting your saves. If you make the save with the mod installed, by the time you remove the CC/mod, the save is already corrupted and removing the mods won't fix it.

If you remove ALL your mods, load a good save and save-as, does the new save get corrupted?

You can try removing all your mods, deleting the cache files, and see if you can load a "bad" save. If you can, immediately save-as under a different name.

If it doesn't work, you'll just have to remove all your mods, copy back just a couple of mods and load a good save and save-as a new game. If that one works, delete the new save and exit, load a few more mods and keep doing that until the save corrupts. That'll tell you which mod is causing it.