Skybox Creator in After Effects not generating the six cameras

I'm working with Mettle Skybox Creator in AE CC 2017. Creator should be adding a six camera rig to my timeline but
it only generates a master camera and the null object/controller every time I try.

I've tried both ways - creating a master and working from an existing composition but I get the same result. All my layers are set to 3d layers. I've watched and followed multiple online tutorials setting up my comps accordingly - this should not be a difficult step....

Any suggestions are welcome!!