As  Russ pointed out your profile needs to be continuous ie; no gaps and all lines connected.
Additionally the start of the profile should move away from Z=0 and not go to the plus side.
Have a look at the manual on drafting problems.
RICH

Marty,
My bad, here is the link:

http://www.machsupport.com/forum/index.php/topic,10091.msg62041.html#msg62041

RICH

Rich:

  I just read the article in Digital Machinist. . Excellent! Thanks so much for the credits, alwasy a kick to see your name in print. You did a fine job and showed LTurn can be handy for many people needing those quick toolpaths for a lathe.

Art

Fixing the toolpath solved the problem as you guys suggested. Thanks! Guess I need to zoom in a little closer on my toolpaths and check for errors.

One other question:
When I output file with a finish pass there are always several lines with two line numbers. Of course Turn sees this as an error and one line number must be removed before the file can be used. Please see the attached screenshot.

Is there a way to keep this from happening?

Thanks again for your help, I sure appreciate it.

Kerry

Interesting, never saw the double line numbers before..

 Ill add to my list to get rid of that possability..
Youll have to edit them out for now. Ill try to fix it this week or next.

Art

Kerry,
I have never seen the double line before and just tried your file 3 times to generate more lines of code.
Quirk? I will leave this one to Art.

RICH

Hey guys, I've been getting this all along.
It occurs  at the first G0 after the first (of two) finish passes typically.
Russ

Rich:

   Ahh, thats probably it.. maybe we always had 1 finish pass and its injecting after the first..

Ill try to get to it as soon as I can..

Art

Art,
I guess we quess better on the rough and only need one finish pass.
That's what's so good about a new  user, they find what we can't!

Got to post Russ when you find anything.

RICH

 I usually use 1 finish pass to knock the corners off of the roughing pass, then a final finish to leave a good smooth finish.
But, I've got a sloppy set-up. Just a hobby rig.
Russ