I have a mesh in blender that I am exporting as a FBX,
If I add some basic material with the panel to change color the threejs loads fine. However when I use the node editor to create a more complex materials (in blender) - no material is loaded in my threejs file.
Is it not possible to load cycles shader materials in the fbx? Something basic I am missing?
Since your question is related to the FBX exporter of Blender, it’s maybe more promising if you ask your question right here: https://blender.stackexchange.com/
Unfortunately I’m not aware of any format that can robustly export Blender Cycles nodes… if a spec/gloss PBR material would do what you need, you can use glTF-Blender-Exporter.