[Current Issue] Sims 3 "serious error" when loading save

candiedsims​  Then please try a new admin Windows account, a local one so there's no link to OneDrive.  It's possible that your main account's Documents directory is still in the OneDrive folder, or that permissions are broken on Documents, and a new account gets around both.

nailuvvsyu​  How to fix this is covered in the first post.  If you have questions about a specific step in the process, let me know.