Export GCODE in Creality Print 6

After slicing the plate in Creality Print 6, I proceed to export the Gcode. When saving, the file extension appears as G-code files (*Gcode, .*3mf), and the PC recognizes it as Gcode and not as 3mf. However, when loading the file onto the printer (Ender 3 V3 SE), the file appears, but selecting it doesn’t display any preview data, and it doesn’t print anything. I have no idea what to do. I’m attaching reference photos.


Are you using the SDcard to transfer files or Nebula/Sonic Pad?

Thank you for the response. I use the SD card to transfer the files directly.

Try a new SDcard, the V3SE can destroy cards, I have gone through many, even the top dollar best ones. This is why I went for a Sonic Pad, no more dead cards.