SSimstinA Please try this exact sequence:
- Drag your whole Sims 4 folder from Document > Electronic Arts to your desktop.
- Run a Game Repair in the EA App. (If you use Steam, the equivalent is Verify Integrity.)
- Launch Sims 4. You should get no list of mods on launch, and you should have no option to load a previous save. Reset your Options.
- Download a fresh piece of recent CC from a well established creator.
- Install it in your newly created Mods folder and retest.
Please let me know if that's an issue for you.