Need Clarification

That message means the game can’t properly read the world or lot address (the “DOT10_World/Empty/LotAddress:Lot22” text). It’s a common Sims 3 issue that usually happens when the game can’t locate or load the right world data.

Here’s how to fix it:

**If you’re using a custom world:**
Make sure the world’s .world file is still installed in:
Documents\Electronic Arts\The Sims 3\InstalledWorlds
and that the file name matches what the save expects. If it was renamed, moved, or reinstalled, that can cause the error.

**If it’s happening to all lots:**
It usually means the game’s cache files are corrupted. Go to:
Documents\Electronic Arts\The Sims 3
and delete the following files:
- CASPartCache.package
- compositorCache.package
- scriptCache.package
- simCompositorCache.package
- socialCache.package

These will regenerate next time you start the game.

**If you recently reinstalled or moved saves:**
The save might be referencing a world that isn’t properly reinstalled yet. Reinstall or reimport that world, and the issue should clear up.

**If it’s just a display glitch:**
Try saving the lot to your library (bin) and re-placing it in the world — this can refresh the lot info.

**Summary:**
This isn’t a major bug, just the game losing track of where the lot is located. Clearing caches or reinstalling the world usually fixes it.