So you have two problems, right? One with shadows, and one with animation?
I downloaded your model, loaded it into OgreMeshy (a mesh viewer - maybe you can get that to run on Ubuntu?), and the mesh and bounding box looked correct. When I started an animation, the model disappeared as you described. So obviously the animations are borked. This might also be causing your shadow problems.
You can view the bones in OgreMeshy by clicking the "show bones" button in the toolbar. While the animation was set to "none", the bones looked correct. Then when I started the animation, the model disappeared, and all the bones collapsed into a tiny dot. This led me to inspect personaje.skeleton.xml, where I noticed this:
Code: Select all
<keyframe time="0.00000000">
<translate x="-0.00001611" y="-0.00003084" z="0.00000605" />
<rotate angle="0.51281846">
<axis x="0.00000030" y="0.00000004" z="-1.00000000" />
</rotate>
<scale x="0.00000006" y="0.00000012" z="0.00000012" />
</keyframe>
Notice the tiny scale values. The animations are causing your model to be shrunk down into a tiny size. You'll need to fix that, it should probably have scale values of 1,1,1. It's like your animations are getting exported at a fraction of the size of the model. I know nothing about Cinema 4D, but perhaps there is some kind of scale modifier being applied to your model which is screwing things up.
Fix that, and see if by any chance your shadow problems get fixed as well.
If not, I'd suggest searching through the forums, there are many, many posts on shadow issues. Provide as much detail as you can in your search terms, e.g. "shadow stencil" or "shadow texture integrated additive" depending on your shadow setup.
If you don't find anything, you'll need to post more details of your shadow setup in your help post. If you're using custom shaders, help might be hard to come by, as they are notoriously hard to debug, particularly from just a forum post.