i just made my first model in Fusion 360 and tried to export gcode with the supplied postprocessor. Unfortunately it seems like additive is not supported.
Error: Additive toolpath is not supported by the post configuration.
Failed while processing onOpen().
I haven’t tried using Fusion to export g-code for 3D but I believe the supplied post-processor is only for CNC.
For me I don’t see any reason to use Fusion for 3D. I’d rather slice in Cura (or for that matter Luban) anyway since I already understand how it works and how to adjust it’s settings.
I just export as an STL from Fusion as @brent113 suggested.