Re: Mods and save files dont work

@Vizidian  I've moved your post to the Sims 4 PC tech section.

Please move your entire Sims 4 folder, not just its component parts, out of Documents\Electronic Arts and onto your desktop.  When you launch the game, a clean folder will spawn with no content.  Enable mods and custom content at the Main Menu, then start a new save (no need to spend much time on it; this is just for testing), place the new sim in a household, save, quit, reload, and see whether the save is still available.

If it is, you can test your existing mods by moving them into the clean folder in batches.  Any batch that causes problems needs to be split and tested again until you find the problem file(s).  Once you've sorted through your mods, you can move the contents of Saves and Tray to the new folder as well, and test to make sure all of your content is still available.