The file section in no longer support in the new Goggle Groups and older version will not allow any further updated files to be added.
Here a link to a location where the file is available (OWA 0.7.0.b36) https://docs.google.com/leaf?id=0B-g4TpKUJnh7YmU2ZGEyOGEtNjBkNS00NmEwLWJkY2UtNTY0MjQwYzcwZWMy&sort=name&layout=list&num=50 Eugene
