Thank you for your reply!
I stretched out the line exactly the way you had illustrated. Still nothing happens. Here are the screen shots.
The tubular one next to the Extruder problem is a Native Follow Me. It worked perfectly. But still nothing is happening when i hit the Extruder icon after highlighting.
and in this screen shot, i made sure the edges were on axis. blue, green and red. 
Thank you for helping me out.