Don’t know if this is a new problem from the firmware, but lately on occasion when trying to 3d print, I go start, and load from thumb drive. Sometimes I get “disconnect” messages during this parsing, but sometimes not. Also, sometimes it parses, and when I click start it says it’s transfering to touchscreen, but then it just doesn’t. I can try a few times but it just doesn’t start. Then, the touchscreen will go black and I assume unresponsive.
I’ve just been power cycling. So far a full power cycle fixes it.