Please, refer to this topic in the plugin forum: http://forums.sketchucation.com/viewtopic.php?f=323&t=35746 It explains how to install zipped plugins (which Shape Bender is, too). Then do not forget to also install progressbar.rb as the first post of the Shape Bender plugin instructs. http://forums.sketchucation.com/viewtopic.php?t=18210