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RecommendedDesktop features a newer cross-platform UI. Classic WPF keeps the familiar Windows interface and is a stable choice for users who prefer the traditional experience.
After downloading the ZIP file, extract it completely to a separate folder, then run the installer from there. Don’t launch it from the archive preview, where it may not be able to access files in the same folder.
Choose either version for your first install. Menus and settings may be in different places, so use feature names in the guide to find what you need rather than expecting an exact match.