Your animation only skeleton has no mesh linked to it, just give it a visible mesh and it will work.
If you don't have a mesh do this:
Download Blender, import the bones, map a simple cube stick man around the bones, use blenders auto weight system and export again.
Do you need to re-target the animation?
Looking at the names it almost looks like that is the animation of the model you have, if it is then all you need to do is assign the animation; there is no need to re-targed animations that belong to the same model.
The reason it wants a mesh is because animation re-targeting is made for passing animations from a full model to a other full model; the mesh is used for bias settings.
So if you have a soldier and a commander they can share animations even if they are not the same size and both different models, all they need
If you want I can do a simple example for you.
Also the Print Scrn button on your key board takes a screen shot, alt- Print Scrn will take a screen shot of the selected window only. Open a 2D editor and paste the image, save it and upload.
Taking photos of the screen makes it harder to read, although it still works. :)