I have a scene where the troll points twice at his own chese and then towards the camera (you know, the you and me gesture).

Well the bvh files plays normally.  I have composed the scene in Poser and it renders normally but when I import it into Carrara it all goes well except for when the troll is supposed to point at his own chest twice..it doesnt work..it just flops a couple of times rapidly but the rest of the animation is fine.  I have tried rendering it as an avi or an image sequence with the same results.  Any suggestions?