Cannot open Mac VST3 version of Auto-Tune Artist on Windows (and vice versa)

The Mac and Windows VST3 versions of Auto-Tune® Artist (and the previous version of Auto-Tune Live) are unfortunately not cross-platform compatible. 

In other words, Auto-Tune Artist settings saved in a project in a Mac VST3-compatible DAW (Cubase, Ableton Live, Reaper, etc.) cannot be opened by the Windows version in the same DAW (and vice versa).