Aha! I figured it out. I extracted the CONTENTS of the folder to the PLUGINS folder but I was supposed to extract the entire folder. Hope this helps someone else.

Hello,

I am using Sketchup 7.1 and I have installed the plugin as well as the pregressbar.rb. Everything seems to be in order but after I click on the group/component, the plugin doesn't seem to recognize the line. What am I missing here?

Any hep greatly appreciated.