Fixing Sim Ages After Aging Cheat & Resets in The Sims 2

Using aging off + frequent resets desynchronizes Sim ages from the neighborhood timeline. There's no single "fix" button, but you have several recovery paths.

Quickest Fixes (In-Game Cheats)

1. Re-enable Aging: Open cheat console (Ctrl+Shift+C) → aging on. Sims will age naturally from their current internal age tick. May take days/weeks in-game.
2. Force Age Up (TestingCheats):

   boolprop testingcheatsenabled true 

   Shift-click Sim → Set Age → Age Up (or Birthday → Grow Up). Repeat for each life stage needed. Precise, instant, safe.
3. Sim Modder / SimBlender (Objects → Misc): Download Sim Blender or InSimenator (ModTheSims). Place on lot → click → Age → Set Age / Age Up. Best for batch-fixing families.

Advanced: modifysim (Use Caution)

boolprop testingcheatsenabled true shift-click Sim → Spawn → More → Sim Modder (or use SimPE externally) 

Lets you set exact age in days per life stage. Risk: Corrupts neighborhood memories/relationships if mismatched. Back up neighborhood first.

External Tool: SimPE (Most Powerful)

1. Close game. Backup Neighborhoods/N001 (or relevant).
2. Open SimPE → File → Open Neighborhood.
3. Tools → Sim Surgery / Sim Browser → Select Sim → Plugin View → Sim Description → Age Data.
4. Edit Age (days) and Days Until Age Transition to match desired stage.
5. Commit → Save → Test in-game.

SimPE fixes everything: age, aspiration, memories, skills, relationships, corruption.

If Save Is Corrupted

• Symptoms: Sims frozen, missing wants/fears, lot crashes, "Error 12" on save.
• Fix: Move family to bin → delete lot → place fresh copy → move in. Or start new neighborhood; use SimPE to export/import Sims cleanly.

Prevention

• Never use "Reset" (shift-click → Reset) on Sims with aging off—it hard-resets their age token.
• Backup neighborhoods before cheat sessions (Documents/EA Games/The Sims 2/Neighborhoods).
• Use Sim Blender for daily age management—it's safer than raw cheats.

Start with TestingCheats → Age Up. It's 90% of what you need.