Using a Mac (Ventura 13.5.1 OS), I am creating one inch tokens with five different images on them for an event. I had constant problems with processing the toolpath which was only resolved by quitting & restarting multiple times. I would constantly get an error generating and previewing with symptoms similar to Can't Generate G-code in Luban.
In the last (most recent to memory of my troubleshooting) I generated two toolpaths (an image with line engraving and a vector for cutting) for a single token as a test to see if the laser settings were right for my material (1.5mm balsa) and successfully exported it. But when I came back to add toolpaths for the remaining images and generated the gcode, only the first token generated and previewed. I had to save, restart luban, and generate again (no editing done) – this time all of the images generated for the preview & gcode.