Error Code 132:<Various Numbers>/Corrupt Ladders

Reposting steps from the old AHQ thread on how to fix this:

For Mod users or people not afraid to try a mod solution.

1. Download TwistedMexis AllCheasts Mod. This mod will allow you to use all game cheats that have been disabled by EA. If you use MC Command Center or other mods that do the same, you won't need this. For convienence I also recommend Better Cheat Console which allows you to copy/paste from the cheat console.
2. Backup your save game and load that backup.
3. Load your game with Load instead of Resume.
4. Open the lot in build mode from the map
5. Open the cheat console and type: objects.list adder (this is not a typo)
6. You will see list of ladders. Next to the object you will see an ID (0x0...).
7. Start with the top one and delete all the ladders with the cheat: objects.destroy <ID>.  Test after every ladder if it starts loading. If there's lots of ladders you can also delete them in groups.
8. Once you found the ladder(s) that are causing the issue, you can either just leave them all out and go back to playing or you can load your current game and delete just the ladder that was giving issues. The ID stays the same so you can just use the destroy cheat (AllCheat still necessary)

Mod Free Solution (by amanda-amethyst​)

• move out any sims that live there
• save the lot to your library (optional, if you want to keep the lot)
• bulldoze
• do a save-as from live mode or build more (not from the world)
• place a new lot with a different lot type (if you started with residential, maybe place a nightclub)
• save-as
• place a second lot with a different lot type (maybe park)
• save-as
• place a third lot with a different lot type (maybe bar)
• save-as
• place the original lot again (or a different one)