Trying to do just a single line with just two nodes. Click to drop a node draw my line and double click to end. Problem is when i take it into sheetcam to post process it turns just a straight line into what looks like an open smiling mouth (only way i can explain what it looks like). It also shows up in sheetcam that way. What am i doing wrong? Thanks for any input.

I'd check the controls bar for a shape on the line... set to none for single line segments.