When creating selectors in Geocontrol, do you preview them (in red) before creating them?

Also, for selectors to work in Vue, you need: 

• either a terrain material that is set to "object parametric"
• or a distribution material whose projection is "from above"

Also, if you are using the method Shawn detailed, set the map size to 1.01, otherwise you will get problems at its edges. Also set your distribution map sizes to 1.01 to match the terrain size.

 

Which build of Geocontrol are you using?
I found the latest one (54) to be quite buggy and am still happily using build 36. 

If you have doubts about the files you generate, try some of the 3d terrains I provide on my website. 

Fantasy pictures, free 3d models, 3d tutorials and seamless textures on Virtual Lands.