Hi @FlyByWire, the support to Snapmaker is not robust jet.
Nevertheless, according to another user, some issues should be solved in the next software update. Have a look to this post https://forum.lightburnsoftware.com/t/snapmaker-job-fails-after-one-cut-on-m8-m9-unknown-command-errors/24151/6
I’ve the same problem you mention in my SM2 as well, so finger crossed.
BR. Gianluca