I've verified the game data on steam, reinstalled the game, even booted back to an earlier save but still the same thing happens. If it's relevant at all, this happens after breaking the big bloodstone, completing the quest where the Homestead is under attack by demons.

I'm hesitant in progressing the story any further since unlocking all the homestead rooms is required to finish the game. Rather not waste time if my save is completely screwed.