Optimized for SketchUp 8 through SketchUp 2016. (Note: For SketchUp 2023 or 2024, you will generally need the most recent version, such as v14.x).
Given that you mentioned "libfredo6 version 6.3," if you're looking for information about this specific version, here are a few suggestions: libfredo6 version 6.3
To ensure your SketchUp workflow remains uninterrupted, follow these steps to manage your library: Optimized for SketchUp 8 through SketchUp 2016