Starting from line

I stopped a long carving job and now when I try to re start from specific line, the program does not start at the line. It starts randomly all over project.
I have tried numerous times and it does not start where it should
I do zero every time I re start
Using G sender 1.2
Any help greatly appreciated

First, start with the latest gSender 1.4.5 and see if that improves the situation.

There’s been a discussion with @KGN where he informs that line counts in gSender do not include any blank lines. Perhaps your line number doesn’t match gSender’s line number for the start point?