@SummerSloane Error 16 usually means that a save is too large, generally over 4 GB. How large was your old save? There are ways to cut down the size, for example Kuree Save Cleaner. But if you've deleted the save entirely, I guess that's a moot point.
For now, what world are you playing in, and are any of the sims in the household you saved also in the world? For example, maybe your sims married into a townie family and there are two Mortimer Goths running around.
If that's not the issue, try playing the household in a clean user folder. Move the entire Sims 3 folder out of Documents\Electronic Arts and onto your desktop, open the launch to spawn a clean folder, and copy the Library folder (but nothing else yet) from the old Sims 3 folder to the new one. When you load a new save, your household will be available to place, although you'll need to exit the tutorial first. (Just click the three dots in the lower-left corner of your screen and select Edit Town, then go back to the initial game setup.) Place the household, let the game clock run for a few sim-minutes, and then try to save.
If this doesn't work, quit the game to desktop, then start another new save, but this time, don't place your existing household, just pick a random one and see whether you can save your progress.
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I don't work for EA. I'm just trying to help fellow players with their games.
