Steps:
1. New game until you are at map generation steps.
2. Click the preview map button.
3. Map preview will generate. ( sometimes it will crash here, but is less likely. )
4. Change a game map setting.
5. Map preview will regenerate and crash before completing.

Notes:
- It is not consistent ...

I am also having the same crash with exactly the same error. Game does not crash if the map generation preview is not turned on.