I got bvh from somewhere on the web, loaded on "MotionPlayer" by "Load
Motion" option, then converted it to simulated character by clicking
on "Convert to Simulated Character"..
On that simulated character tab, I wanted to load a motion so I loaded
another bvh using "Load Motion". But it says "cannot rotate character,
no root found".. Could you explain how to load animation (bvh) on
articulated objects? How do I load many bvh files sequentially on a
single articulated object ( so it can do different motion continuously?)

Your help is greatly appreciated.
Thanks.