Corrupt map: unknown quality prototype ID 16 (Factorio 2.0.73)

[r0c]

Hello,

My save file no longer loads. When I try to open it, I get the following error:

Corrupt map: unknown quality prototype ID 16. File has likely been corrupted due to failing hardware.

Game version: Factorio 2.0.73 (Steam, Space Age)
OS: Windows 11
What I have already tried:
- Verified game files through Steam
- Tried loading the save after unzipping it
- Disabled all mods (I am playing vanilla)
- Tried loading autosaves (they don't work)
I am attaching:
- The corrupted save (.zip)
- My factorio-current.log file

Could you please check if the save can be recovered?

Thank you very much !

[boskid]

Did a quick look, i have no idea how this save file got corrupted, its a little bit too far from a bit flip. But i think i managed to fix it.

I was not looking too much where the corruption was, it looked like something about one of inserter filters inside of blueprint that contains this part in its description: "27000 / min green circuits ( 10 blue belts )". Quality was set to normal.

[r0c]

First of all, a huge thank you for your efficiency and your quick response.

You quite literally saved my factory… and my day!


Yesterday, I shut down my PC very quickly right after closing the game, and I had made a lot of saves during that session. I still checked the health of both the disk and the RAM: everything is fine.

The repaired save works perfectly.

I’ll also take a look at the blueprint you mentioned to make sure it doesn’t happen again.

All my gratitude for your help, boskid!

[pioruns]

On the side note, Factorio log reads:

Code: Select all

   0.096  [0]: Unknown CMK32GX4M2E3200C16 16384 MB 2133 MHz 1.2 v 64|64
   0.096  [1]: Unknown CMK32GX4M2E3200C16 16384 MB 2133 MHz 1.2 v 64|64

Looks like your Corsair VENGEANCE® LPX 32GB (2 x 16GB) DDR4 DRAM 3200MHz sticks are set to minimal, default speed of 2133 MT/s.
You may want to check that out in BIOS, and set them to 3200 MT/s.
You could test RAM with Memtest86+ while you are at it, to try and determine what has corrupted your save file.

[r0c]

Thank you very much for these details, duly noted.

I’ll check the RAM configuration in the BIOS and run a test with Memtest86+ as recommended.

Un grand MERCI pour vos retours

[r0c]

I found the blueprint in question: it comes from a blueprint book downloaded from a third‑party site.

Have a nice day.