This is simply broken now. Not sure if it worked in older Unity and SDK, but it certainly doesn't work now without modification which I do not know what exactly needs done. Needs updated. Also, be sure to remember to detach your Blueprint ID before exporting as you forgot in this instance which led me me and anyone else who downloaded this to have your ID for this avatar.
Hey there Scarlet, there's issues with your models in the new Unity (2017.4.15f1). I deduced via the console that the issue is due to the included shaders failing - specficially the "Flat Lit Toon (silent) shader.
I fixed the issue by manually setting the model to use my own version of Cubed's Shaders, which is the latest Cubed's release.
I think perhaps it may be wise to simply set the models to use Cubed's Shaders normally and tell people to get the shaders on their own, rather than attempting to include those shaders with the project.