Mohammed mentioned that Marcus wasn't printing, and the same thing happened when I tried at the weekend. I've spoken to @Knottyashcreative, who thinks it's an issue with the SD card reader and is aiming to take a look on Saturday
3D printer now working as it was tested and ran smoothly. The issue was with the Card Reader. It was agreed that a future permanent fix would be moving over to Octoprint.
Mohammed mentioned that Marcus wasn't printing, and the same thing happened when I tried at the weekend. I've spoken to @Knottyashcreative, who thinks it's an issue with the SD card reader and is aiming to take a look on Saturday