[2021] Surviving Mars - Crashes on saving

That log only shows the game starting up, no crash or save. Can you find a log that shows the problem please?

Add MarsSteam.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.  

RaxZ said: I'll try disable the hole Defender to see if it helps.

Don't disable it, just do as I described.

RaxZ said: Because you dont get the same crash i guess?

Me personally? Well, no.