Ruby strange error

Developers Ruby API
,
2

Memory corruption, likely. Exit SketchUp. Reboot Computer.

If you can get a repeatable error with a certain model, a certain code snippet in the latest SketchUp version, please log a bug report in the API issue tracker.

Aside: Your method as shown returns an Array of two points, not a single point.

For Ruby 2+ (SU 2014 and higher) you can use the shorthand notation …

  def get_points(edge)
  	edge.vertices.map(&:position)
  end

And you can always do (which is likely faster) …

  def get_points(edge)
  	[ edge.start.position, edge.end.position ]
  end