Recently I decided to finish reading Fate/Stay Night -UBW- route too since I've already read the Fate route and was at day 13 in UBW, read untill day 16 and decided to leave it for the next day, but next time I opened F/SN some errors popped up, managed to fix those but now I'm stuck with this one: https://imgur.com/a/bcRxQZI (SS from Fata Morgana because it has the same problem as F/SN and I've uninstalled F/SN for the time being).
System Locale is set to Japanese and I've installed the Eastern Asian language packs but nothing changed.
