I need some help

  1. I getting this mssge every time I load file:

ones it pass the file and here what it did cut:

Looks like you may have an invalid Grbl command in the gcode. What program (and post processor) are you using to generate the gocde?

I had same error message, because every time browsing and loading toolpath, I was checking visual. I started to close virtual screen before sending, open again after job start if I want to. Problem is gone. You may want to try, if you see message when visual screen open on background.

I’ll try to explain.
machine setup is great(belts, connections,…)
I just use VCarve pro and clip art that comes with.
https://drive.google.com/folderview?id=0B2dxjWOXIiWlTDRzMUNSQldxLUE&usp=sharing

there is my google drive, you can see pics of old cuts(wrong placement and broken bit because of wrong second cut start)
seahorse I posted before I did yesterday night and just now did again.
there is short videos as well.

today: same file first loaded with error screen and went ok from second try ( I closed everything and waited cpl seconds and powered all back and fresh start) you can see all on videos.
on last 2 minute left it went off the grid and higher as did yestrday but without cutting wood, just routing arround

3D horse.gcode (1.1 MB) 3D eagle.gcode (2.0 MB)

@AllenMassey here is files.
I know it’s not correct bit as now, but I did before with correct ones.