Factorio Forums

When attempting to save manually or during a scheduled autosave, the game either fails to save and displays the message: "Cannot save map: ElectricNetworkSerialiser::getEnergySourceIndex, the energy source was not saved." Trying to save again afterwards results in the same error message.

Or, the game may crash to the desktop.

It does not happen every save attempt, but the frequency of the errors is increasing over time.

This generally means the gamestate became corrupted, either because of a bug or because there is something wrong with your machine. If you find steps that reliably produce the error or crash, provide the save and let us know please.

Here is a Google Drive link to the save file and DMP file.
https://drive.google.com/drive/folders/ ... sp=sharing

Do you have any way to take a known good save file and make it produce this error on save? I've only ever seen after-the-fact corrupt saves which ended up being traced to failing/failed hardware.