Material Doesn't Load in Cycles

I have a rigged .fbx of a person downloaded from Mixamo’s website.

In Blender2.78b (on Ubuntu 18.04), I first set the rendering engine to Cycles. Then, I import the character into Blender.

When I import it, Blender automatically creates all the necessary nodes for the textures / materials. In fact, if I go into the Node Editor, I can see the Image Texture node for the mesh is hooked up properly, as should be.

However, it seems that the texture / material for the person is not loaded initially.

But once I perform some kind of action, such as scaling the armature and then undoing the action, the texture is magically applied onto the person.

Does anybody know why this happens and how I can get the texture loaded properly without performing the above intermediate actions?

Thanks

When I import it, it seems that Blender cannot find the material somehow.

See: