If I am not mistaken, those “G04 1” lines should be “G04 P1” , the G4 command expects a delay in seconds or milliseconds specified after a “P” value (hence CC’s error message)
Looking at @neilferreri’s post, it gets the value from [DWELL] value, which I understand is used when a “Dwell move” is generated in the G-code. But I don’t know where this is set in VCarve. I just tried a sample file of mine using this post in VCarve, and I don’t have those G04 commands generated in the output file.
I’m sure Neil will chime in soon to explain, in the meantime you should be able to remove those “G04 1” lines (the only thing they do is wait 1 second) and run that safely.