Save crash after 50h – double entity / EnergySource bug
Posted: Sat Mar 28, 2026 10:53 am
Hello Factorio team,
My save (and all auto save) crashes immediately on load after ~50h of gameplay.
I’m running Factorio 2.0.76 (build 84451) on Windows 11, also tested on Mac.
**Steps I’ve tried:**
- No mods (vanilla game)
- Autosaves disabled
- Headless server mode
- Threads = 1
- Deleting script.dat and other non-core files
- Recompression of save
**Crash details from factorio-current.log:**
Error: ElectricEnergySourcePrototype.cpp:58 → Energy source error, most probable cause is the double entity problem.
Stack trace points to: AssemblingMachine → EnergySource → Chunk::load
**Files attached:**
- `test.zip` (the save)
- factorio-current.log
It seems like a single entity / chunk is corrupted and prevents the save from loading.
Any help would be much appreciated to recover my save!
Thanks!
My save (and all auto save) crashes immediately on load after ~50h of gameplay.
I’m running Factorio 2.0.76 (build 84451) on Windows 11, also tested on Mac.
**Steps I’ve tried:**
- No mods (vanilla game)
- Autosaves disabled
- Headless server mode
- Threads = 1
- Deleting script.dat and other non-core files
- Recompression of save
**Crash details from factorio-current.log:**
Error: ElectricEnergySourcePrototype.cpp:58 → Energy source error, most probable cause is the double entity problem.
Stack trace points to: AssemblingMachine → EnergySource → Chunk::load
**Files attached:**
- `test.zip` (the save)
- factorio-current.log
It seems like a single entity / chunk is corrupted and prevents the save from loading.
Any help would be much appreciated to recover my save!
Thanks!