Good day Fredo, I'm VERY new to SketchUp so please bear with me. I have watched the video wrt installing plug-ins/extensions and am happy that I'm doing it correctly. When I start SketchUp I get this error message for both v7.6 and 7.7:

Error Loading File Fredo6_!LibFredo6.rb
Error: #<NameError: uninitialized constant LibFredo6_Loader::LibFredo6>
C:/Users/Main/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/Fredo6_!LibFredo6.rb:63:in process' C:/Users/Main/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/Fredo6_!LibFredo6.rb:70:in module:LibFredo6_Loader'
C:/Users/Main/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/Fredo6_!LibFredo6.rb:28:in `<top (required)>'
"Aidez moi s'il vous plait"
Kind Regards,
Joe J