In your scene is only the default (root) namespace which is always there and which can be ignored. Reference your rig into an empty scene, and it will be in a namespace.
Late response, but yes. I ended up creating a root called bone and attaching it to that. Animation from there was fairly simple. Thanks for the advice.
@kristofferf Hi! All of the models are in the pack right now including the trees pine and the root tree, but except the big pillars in the sky. Thanks!