(2020-09-04, 0:19)Ber Wrote: The output file is always 100% black / transparent for any combination of these options I have tried.
This is probably an OpenGL issue, are you using the latest drivers (usually OpenGL 4.x).
You could try LDCad as it also uses OpenGL for the export to png.
Just load your model and press alt+e, and choose OpenGL view export. The png will be saved in the same folder as the loaded model.
If that one is also all black then this is most definitely a driver issue.