I tried to run a very small job this afternoon and CM stopped in the middle of the job and gave me two errors. I had the letter error when I started and initialized but then I re-initialized and it started fine. I had no dust collection so it should not be static electricity.
If this is the case, I wonder if the newest versions (after BitSetter) have changed their communication stack because it never happened to me in previous versions but I’ve had the warning before I started the job in the past few weeks and I have not been using the CNC a lot so it must be frequently happening.