I am in the process of creating a pantograph (one continuous line) for a quilting longarm machine and am currently, at the point where I am ready to generate the gcode. 

When I select apply in the path to gcode dialog, the following error is generated:

C:\Program Files\Inkscape\share\inkscape\extensions\other\gcodetools\gcodetools.py:3403: DeprecationWarning: inkex.deprecated.main.transform_mul -> Use @ operator instead
  trans = (Transform(t) * Transform(trans)).matrix if trans != [] else t

(That's all of the error that is given, but it's obviously truncated.)

On my image, I can see the path of the gcode, but it starts at the right side and moves to the left which is not expected. I believe it should start from the left and move generally to the right ... at least that's what I'd like for it to do. I suspect it has something to do with the matrix transformation error above but maybe I missed a step along the way?

Is the above warning one that should be ignored? If not, do I need to (re)install an extension and/or patch? Does the error have something to do with the "backwards" path of the gcode? If not, what can I do to get the path oriented to go from left to right?

For debugging sake, I downloaded version 1.3.2 and installed it on my Windows 11 Pro machine using the msi installer. Any help would be greatly appreciated.

Before proceeding further, I'd reset the preferences: https://inkscape.org/forums/questions/getting-back-to-square-one-and-starting-over-its-easy/

(Changing Inkscape versions won't reset these files, so custom preferences can be retained with minor updates.)

The message you are seeing is just a warning and shouldn't have an influence on the outcome. The authors may like to know about it though, so they can fix it (replace the * with an @ sign). You can report the issue at https://inkscape.org/report

But since you are working on a design that you want to stitch out, I'd recommend to use the Ink/Stith gcode export, which you can do through `File > Save a copy ...` and then chose the gcode format from Ink/Stitch. The reason why you should prefer this one is, that it will take care for the stitch settings, for example stitch length and lock stitches, etc.

As for the path direction, you may need to use Path > Reverse if it is going the wrong way. But you don't have to export the file to see the path direction. Here is a short explanation on how you can see it right away: https://inkstitch.org/docs/customize/#enabling-path-outlines--direction

You can also preview the stitch out in the Ink/Stitch simulator.