Hello Anton,
I got this error message after install the plug in and open Scketchup up
(I have ScketchUp Version 8.0.164846, Windows 7 64bits.)
( I don't see the Extension Option at Menu )
:
Error Loading File C:/Program Files (x86)/Google/Google SketchUp
8/Plugins/ams_CopyAlongCurve/main.rb
undefined method new' for Length:ClassError Loading File ams_CopyAlongCurve.rb undefined method new' for Length:Class