Hello, I'd like to add my experience on print issue. My printer stopped to move after some times (1 ou 2 hours), or moved one line every minutes before stopping. The symptom was a "o" received in the log in place of a "ok". I tried 3 PCs, 3 USB cables without effects. "ok" was not mandatory in the comm setup. I finally changed the Mega carte from a Taurino to a Funduino I had for other projeby BHI - Printing