[0.17.52] Crash loading save, beacon stuff

[Hydra]

The game is now crashing when trying to load my save from yesterday.
The save file is 114MB and too large to attach directly so a google drive link for it is:
https://drive.google.com/open?id=1H8fEW ... oBOU8pnZ5r

[Hydra]

And I tried reverting back to .50 - but it won't load the save due to the map version being higher than the game.
So I guess I'm stuck for today without factorio....

[Hydra]

And I forgot to mention - no mods are being used. Only vanilla factorio

[Rseding91]

Thanks for the report. I took a look at your save and from what I can tell when it was saved something corrupted the saving process and wrote garbage values to the save file.

Every instance we've had of this in the past has been random memory corruption on the persons computer flipping bits in data we're writing to disk.

I tried to recover your save file but it's too far gone for my abilities. You'll have to use an older version of the save that isn't broken. I also recommend running some kind of memory test to see if it finds anything.

[Hydra]

Well, ok I guess then....
wow.
I did just go through and check my autosaves... I have three old ones which are saved every 15 minutes.
All of them have the same problem.

And by coincidence I did a different save yesterday morning which *does* load ok.
I guess only losing one days work isn't so bad. Lots of stuff to rebuild though...
I have a pretty stock computer here, no overclocking or anything like that and have never
experienced any other memory issues that I'm aware of anyway.
I will dig up a memory test sometime today and let that run a bit.

Thanks for your time at looking into this - I'm a long time software developer myself and can
understand the frustration with possibly flaky hardware.

[Rseding91]

Thanks for your time at looking into this - I'm a long time software developer myself and can
understand the frustration with possibly flaky hardware.

It's a numbers thing. Random bit flips happen in some very small % of perfectly working RAM. Most of the time it has no effect (either it flips a bit not being used or flips a bit that means nothing special when flipped). In Factorios case virtually all of the memory it uses needs to be exactly what it should be or things break.

Since there are so many players playing the game the chance that we see problems due to random flipped bits grows.