Factorio Forums

Hello Forum,

I have a multiplayer world, and wanted to update from 2.0.23 to 2.0.30, but the save game keeps crashing when trying to load the world (see screenshot).

What did I try?
1. I tried these versions:
- 2.0.23: Game loads/works fine (on my machine and a friends machine as well)
- 2.0.24: Game loads/works fine as well
- 2.0.25/28/30: Game crashes on load with save games from both 2.0.23 and 24 (I created a new save when it loaded with 2.0.24)
2. I tried to disable all mods (see mod-list attached), including space-age related mods, which resulted in the same behavior
3. I also tried reinstalling all these different versions, as well as the zipped Windows Versions.

I have saves from 2.0.23 and 24 here: https://drive.google.com/drive/folders/ ... drive_link

If the save game is broken, is there any way to fix it, or are we stuck playing on 2.0.24?

Best regards,
HpBanger

Provided link to a save file is private.

Sorry, I changed it. Hope it works now.

Looking at the Space15.01.2025v2.0.24.zip save file i can clearly see a bitflip has occured making this a 1/0 magic.

Issue happens when loading active entities that are supposed to be on a chunk(-22,37) on nauvis. This chunk spans over positions from (-704,1184) up to (-672,1216), however this chunk has on it a fish that reports as being at a position (-684,3246) which is 2048 tiles south of the mentioned chunk. To fix the save file i converted the chunked level data into a continuous level.dat, opened it with hex editor, found the relevant position where the fish has its position saved and at position 64156811 of the level.dat i changed just one byte from 0x0C into 0x04. This makes the save file to load without any issues.

I just tried the fixed save and it works! Thank you very much for your help.

Best regards
HpBanger