Can you collect Windows system information profile (MSInfo) and send it to supportdos@larian.com. Also ensure you have latest version, go to your Local folder of the game (using Steam) and collect all .dmp files there from today. Those files can be attached to letter. In the letter make remark like "Attn: Forums(Save crash) For Platon"
Only having both of these materials we can make assumptions about your issue.
Good luck!
