HI, I tried to resolve this problem alone, but it’s making me crazy. My purpose is to print on my printer (anycubic prusa i3) a painting of van gogh (starry night) and i found an image semplified of it(with just the guide lines), so i used shapeways 2d to 3d to convert it in a X3DB file. later i used Netfabb to repair and convert it in a stl and Cura made the Gcode, but when i put everything on the sd card in the 3d printer it doesn’t permit to start printing. Maybe i need to make a path for the printing? if yes how? thanks for your attention, i wait for your suggestions.