I downloaded “Select faces by area” plugin by Sdmitch. Firstly I packed .rb file to .rar with WinRar and changed the file extension to .rbz, then tried to install the plugin via Extension Manager but it splashed an installation error. So I put .rb file manually to Plugins folder (it looks that lots of Sam D Mitch plugins require manual installation) and restarted Sketchup, run as admin (SU2017, Win7 64bit). An error occured: “Error loading file SelectFacesByArea.rb”. What can I do?