I've finished both Runas and Yukinos without a hitch. However, now, I crash at some point in Midoris route. To be specific, it's the part after the school festival when Yuuma decides to go back to school, meets Kishi and Midoris dad, Kishi leaves, and then Yuuma and Midoris Dad talk. Furthermore, I'm running on Windows 7, if that serves any purpose.
Attached below is the scene in question along with the error.