I monitor all my prints in the Terminal as they run.
Basically I sliced from Matter Control, copied the G-code to the SD-card, put that in the printer and loaded it. I start printing, get 3-4 layers in, and the printer stops. Scroll back through terminal it's stuck in a loop UNKNOWN COMMAND (numbers) ""
Only does that from the SD card, and only from the Linux version. Windows it worked great, we used it on large parts.
For the sake of troubleshooting I did test it with three different cards and multiple files. All sliced from Matter Control, all loaded onto the SD card... loaded into the printer, then launched from Matter Control.
I'm wondering if the slicing itself is bad, and if that isn't what is causing these blow-ups? If the slicing engine is generating gibberish-code that would cause all kinds of exceptions, loops and failures. I am going to try getting Cura up and running on here so I can slice some files as a test, then feed them to Matter Control and see if that makes any difference.