It want to open a large gcode file, no processing, what about that ?
I'm telling you. there is a need for the software so it can open files larger than standard 512MB text.
It seems that S3D is using some kind of procedure for creating the gcode that when the gcode file size is bigger than 512MB it fails the compilation and exits the program. I have tested that the same STL file has no problem in other slicers (e.g. SLIC3R and CURA) and they can build the gcode with a ...