only other thing, that you haven't listed as tried, that'd i'd suggest attempting, would be to clear both the download and browser caches of steam.
-- note that you will need to re-login afterwards.

sometimes issues with games can be due to something in the caches.
-- beyond that, we can only report the issue to the devs.

"Attempt to realloc an unrecognized block" sounds like a memory issue. Don't quote me on this.

Have you erased Abiotic Factor COMPLETELY off your drive and reinstalled it? Uninstalling doesn't remove all the files. You gotta get into the directory and manually delete the files. Be sure to back up your saves beforehand!

Originally posted by burger boy:

only other thing, that you haven't listed as tried, that'd i'd suggest attempting, would be to clear both the download and browser caches of steam.
-- note that you will need to re-login afterwards.

sometimes issues with games can be due to something in the caches.
-- beyond that, we can only report the issue to the devs.

Originally posted by Acey Drgn:

"Attempt to realloc an unrecognized block" sounds like a memory issue. Don't quote me on this.

Have you erased Abiotic Factor COMPLETELY off your drive and reinstalled it? Uninstalling doesn't remove all the files. You gotta get into the directory and manually delete the files. Be sure to back up your saves beforehand!

Sorry for the late reply, my friend was not available until today to test these.

Sadly its still not working, though the crash window now just only says "Fatal Error", without the rest of the text in the original post.

I have the most recent crash log which I can upload somewhere, maybe paste bin, if thats any use to yall?

I'd start with the classic friendly reminder to run sfc and dism once a month.

Type cmd into the taskbar, right click, run as administrator.
In the command prompt that appears type:

DISM /Online /Cleanup-Image /RestoreHealth

Once that is finished and made it's fixes (if required). Type next:

sfc /scannow

Then once that is finished and did it's repairs, just to be sure that baby is happy, do a restart.
If you have obvious trust issues with what i wrote here (which you should cause we do not trust things just because someone on the internet told you so) you can google or AI both commands and see what they do, but in essence the first one is an online tool to repair system files via comparison to the original "safe" image, while the second is a further dig into verifying protected system files.

Further potential fixes would be:
- Verify game files via steam/epic launcher
- Make sure GPU drivers are updated (and while you are at it, why not make sure your bios is up to date too)

The tl;dr of your issue is basically a memory error, but its kinda impossible to tell whether this is a hardware or software issue. If you get lots of freezes and crashes i'd risk telling you to run microsoft's memory diagnostic tool or memtest86 to make sure that its not the ramstick that has taken a blow.
But tbf the chance of that is kinda low.
If nothing helps as a final and desperate act you can also try to drop graphic to the bare minimum so the load on memory is smaller.