I wrote a very simple plugin for SketchUp 8 which no longer seems to work with 2013. Is there something different or new that I need to add into the ruby code? Below is my simple code which takes every line in an Autocad file and breaks out the end points. Nothing complicated.

require "sketchup.rb" 

module CD 

def self.export_points
 
model = Sketchup.active_model 
ents = model.active_entities 
path = UI.openpanel() 

if not path then return end 

aFile = File.new(path, "w") 

ents.each{|e| 
if e.is_a?(Sketchup;;Edge) 
sp = e.start		 #starting point of the line
ep = e.end		 #ending point of the line
x1 = sp.position.x
y1 = sp.position.y 
x2 = ep.position.x 
y2 = ep.position.y 
aFile.puts(x1.to_s().chop + " " + y1.to_s().chop) 
aFile.puts(x2.to_s().chop + " " + y2.to_s().chop) 
aFile.puts(" ") 
end 
} 

aFile.close() 
UI.messagebox('Script Complete') 

end # CD.export_points 

end # MODULE 

filename = File.basename(__FILE__) 
  if not file_loaded?(filename) 
  UI.menu("Plugins").add_item("ExportWalls") {CD.export_points} 
  file_loaded(filename) 
end