The Sims(TM) 3

The Sims(TM) 3

Not enough ratings
How to Overcome Error Code 12
By Obersturmbannführer Todesengel
If you play The Sims 3, like I do, you might have come across Error Code 12 when saving your game. Just so you know, this has nothing to do with the state of your actual save game file, it actually has something to do with the world file your save game is based on! Actually, it has nothing to do with that either, more so, it has something to do with the copy of the world file that is stored within your save game file (which is actually a folder, but the game sees it as a file), which might have been corrupted or deleted or something which makes it unreadable by the game (renaming, deletion, corruption, etc.).

By now you may be thinking "Oh great so my save game is permanently damaged", guess what, YOU'RE WRONG! The Sims 3 is so smart that when it loads the save game, it loads EVERY SINGLE FILE inside of the save game folder, so not all hope is lost, however, we have to manually trigger the restore mechanism, and I'll show you how to do that now.
Steps 1 - 6
1. Switch out of the game (DO NOT CLOSE IT, just switch windows using Alt + Tab on a PC, or Command + ~ on a Mac)

2. Open a Windows Explorer or Finder window (essentially just go to your Documents folder).

3. Browse to where save games are, well, saved (If you don't know where these are look at the bottom of this post).

4. Delete any folder that has a name ending in .bad AND has your save game's name at the beginning of it (e.g. Michael's Game.sims3.bad). These are the failed saves.

5. Cut the folders that have your game's name at the beginning and end with .sims3 or .backup (e.g. Sariah's Game.sims3 or Sariah's Game.sims3.backup) and paste them into a backup folder (maybe create a folder to paste them in called "Sims 3 save backups" on your desktop) (these are the active save games that the game loads and their backups)
* If no backup exists, I found that just deleting the .bad file, returning to the game and saving will fix the problem.

6. Try saving again (don't worry about lost files, the game will automatically generate new ones, which may cause the save process to take longer than usual as more data is being copied from RAM into permanent storage)

So that should get you back on your feet! I hope this helped!

Peace everyone!


Windows Vista and 7:

C:\Users\USERNAME\Documents\Electronic Arts\The Sims 3\Saves
Windows XP: C:\Documents and Settings\USERNAME\My Documents\Electronic Arts\The Sims 3\Saves


Macintosh HD\Users\USERNAME\Documents\Electronic Arts\The Sims 3\Saves

How to fix "Error Code 12" in the Sims 3 (PC & Mac)
by: katiecatsims

< >
Obersturmbannführer Todesengel  [author] Mar 10 @ 3:54pm 
Hi there thanks for commenting! I have another guide up that covers error code 16. I'll link you:
rhiannonhaut Mar 10 @ 1:30pm 
Something similiar happens to my game except it says "Error code 16." Do you know what that means? It only happens every once and awhile.
Obersturmbannführer Todesengel  [author] Mar 9, 2017 @ 2:06pm 

I'll try and sit down with you once I'm home and help figure out the issue.
Sabelene Mar 8, 2017 @ 11:56pm 
Sadly, this didn't work for me :( Any other ideas? Can't even save a backup file right now...
CriticalChaos Nov 18, 2015 @ 7:04pm 
Thank you so much, you saved my ass.
Obersturmbannführer Todesengel  [author] Jun 4, 2015 @ 6:25pm 
Hey Reck! Can you tell me what type of errors you're getting. Paste the error code here and I'll see what I can do for you! :clementineelf:
boii Mar 8, 2015 @ 7:02am 
Obersturmbannführer Todesengel  [author] Jul 20, 2014 @ 11:07am 
Thank you so much! :)
HighGypsy Jul 20, 2014 @ 9:20am 
*thumbs up*
Obersturmbannführer Todesengel  [author] Jul 7, 2014 @ 6:03pm 
Here you go. I hope this helps you out!