Thanks for the comment! We're so glad you've been enjoying Obscura.
As for the crashing and missing files, my first guess would be an overzealous antivirus program scanned the game and decided it shouldn't be allowed. Some antivirus programs do not recognise Ren'py games and treat them as a potential threat. We're not a threat. You can check your antivirus logs to see if any files were deleted or quarantined or whitelist the file location to see if it's something like that. Hopefully that helps!