When I extracted the zip contents into the plugins folder in Sketchup Make 2014, I got this error when I started Sketchup.

Load Errors

Error: #<TypeError: wrong argument type (expected Sketchup::Entity)>
C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft/clf_simple_loft.rb:49:in add_group' C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft/clf_simple_loft.rb:49:in activate'
C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft/clf_simple_loft.rb:328:in select_tool' C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft/clf_simple_loft.rb:328:in <top (required)>'
C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/extensions.rb:197:in require' C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/extensions.rb:197:in load'
C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft_loader.rb:29:in register_extension' C:/Users/Boys/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/clf_simple_loft_loader.rb:29:in <top (required)>'