Has anyone used SprutCAM to generate paths for ChiliPeppr and have a POST that works?
I attached a sample I generated, which loads, but I get errors when running it.
https://drive.google.com/file/d/0B_hYD7szqqMBTVQ1WWJCUDdTcFdEYlplUFhWd0lyZ2RNQVk4/view?usp=sharing
This Gcode looks really nice. Are you TinyG? In looking at your file the first problem I see is line 9 where you ask your spindle to turn on at 3,800,000 RPM!
3.8 million RPM? That’s not nearly enough! That’s only 10% of the relativistic speed of light. 
I am using grbl. There were lots of ‘invalid command’ or something like that. That shouldnt have been the spindle speed right? (Im not sure how it got that big, I think )
To be specific , when I click the > button:
N1 ( panel_hole )
N2 G54 G90 G17 G61 G40 G80
N3 G00 G49
N4 G21
N5 ( Finishing waterline )
N6 G54
N7 T1 M6
error: Invalid gcode ID:24
error: Unsupported command
Why don’t you step through the Gcode line by line using the awesome button just to the right of the stop button in the Gcode widget. Then you can see which lines are erroring out.