When installing an older version, you must download the file and install it manually via the Extension Manager (Window > Extension Manager) or the older Preferences menu (Windows > Preferences > Extensions), then restart SketchUp for the library to sync with your other plugins.
LibFredo6 is a widely used scripting library for FreeCAD that provides utilities to simplify and extend macro and workbench development. The "old version" typically refers to legacy releases before major API reorganizations; it was commonly bundled with or required by community workbenches to offer helper functions, GUI widgets, file IO utilities, geometric helpers, and compatibility wrappers across FreeCAD versions. Libfredo6 Old Version
The primary reason for seeking older versions is the shift in SketchUp’s framework. Starting with , the library only supports SketchUp 2017 and newer . When installing an older version, you must download