Most of any corruption I ever had was when I used tools to 'clean up' memories, clean up Sims on lots, left behind etc. unseen, and conversions and some cc that no one would know that ever caused a problem. Those are hard to run down. But I supposedly corrupted that one neighborhood years ago when I moved some houses (with Sims) into a hood I created so it was corrupted from the beginning...it is the one hood I played for ten years. It still loads and plays today but I retired it about three years ago. It is sometimes just luck of the draw and using too many tools to 'fix' stuff that may be better left alone. As I said it had a few glitches but nothing that couldn't be played. And why I think corruption is overrated. Most things are bad lots.