Hm, i have render it as single and I have render it as animation from frame 8 to 9.
At frame 9, I have the same up-vector, with the still and the animation, for the camera. (x=-0.0786038, y=0.9823382, z=0.1698030)
Can´t find any issue at this time, it´s seems a little bit tricky
But i´ve seen that you use not the current version of the plugin or you haven´t update the custom parameter in the scene.
The native unit size is missing in the Project configuration tab.
You can find it here:
http://www.refractivesoftware.com/forum/viewtopic.php?f=29&t=4393&start=0face