I finished building and "calibrating" my new Startt printer kit, and have followed the instructions for "first print" but cannot get the file to load. The file is on the SD that came with the printer, but the only menu option I get that relates is SD Card > Mount card. This only seems to lock things up I have tried rebooting several times. I also have tried using the USB cable but my laptop does not seem to recognize a new drive location or the device, and the printer panel behaves no differently whether plugged in or not. I see a few other discussions with similar experiences but no posted resolutions other than the suggestion of a faulty control board. Any suggestions?