LibFredo6 v6.3 requires , which is present in SketchUp 2017 and later. However, Fredo6 officially recommends SketchUp 2020 or newer.
: You must restart SketchUp after installation for the library to load properly. For Troubleshooting "Version 6.3" Errors libfredo6 version 6.3
The only reason to not upgrade is if you are deliberately stuck on SketchUp 2019 or earlier—but even then, v6.3 will work, albeit without some UI refinements. LibFredo6 v6
LibFredo6 is a shared plugin library. It is not a standalone tool with its own toolbar icons; instead, it provides the "shared DNA" for Fredo6’s suite of plugins. It manages: LibFredo6 v6.3 requires