I've uploaded a video of the scene while I'm editing and the scene after rendering. It's a simple stairs and 2 balls.
While editing, the stairs physics are set to 'non moving object' and they don't move as I edit.
When I take that exact scene and render, the stairs seem to behave as one of the objects in the physics chain.
Any ideas? The videos are here:
http://xue.posterous.com/anime-studio-8 ... iggyness?6