Ok, so it's actually 0a1baa619171 that broke it, not sure how I came up with the other revision. In any case, it's too hairy to try and piece everything together across the numerous bug fixes, feature adds, and refactorings in this area in order to get back to a working state (plus you'll want to jump out the window if you try, believe me). I'm going to have a go at basically rewriting the os.stat Windows path tonight and tomorrow and see what that does.