So I was updating the Sims 3 to the latest patch (1.55) and at the end when it was almost done a message popped up saying that there was an Invalid file found. I didn't know what happened because this never happened to me before, so I searched to see if anyone else found the same problem and they did. After searching I found out that if I backed up my saved games and uninstall Sims 3 it would go away. When I went to go find the Saves Folder there wasn't one. Computer > Local Disk> Program Files (x86) > Electronic Arts> The Sims 3.
My saved games are still there and they work fine but sometimes the animation are slow, like if a sim was cutting veggies the sim would be doing the motion but after a few seconds the veggies that were cut up fly back. I don't know what happened to the folder, and if I make another Saves folder would my saved games disappear.