If you're excited to play Fields of Mistria 1.0 today, but can't load into the game after the update because of an Unrecoverable Error - specifically called Option::unwrap() on a None value - then here's how to fix it.

1. Press Windows Key + R - this will open the Run dialogue box.
2. Type (or copy and paste) %localappdata% and press Enter.
3. Find the FieldsOfMistria folder among the list.
4. Open it and make sure you copy your Saves folder to your desktop as a temporary backup, just in case.
5. Delete everything else inside that FieldsOfMistria folder - (don't worry about doing this - mine was 3 .json files)
6. Try booting the game again (this should let 1.0 generate clean configuration files).

This is the fix that worked for me, so hopefully it helps you too 😁 happy gaming!