Only one object (cube with background image) is rendering after 1st frame Preview render shows all objects properly. When I go to render as animation using PNGs, all objects besides one cube disappear for the rest of the scene. The cube has an image on one face and is used as a background for the scene. Why do all of my objects disappear after one frame?

My blend file http://www.pasteall.org/blend/33273

First frame of scene


Second frame of scene
After getting some mixed results it would appear that the issue is a bad rigid body cache.

Open the file and set the current frame to a negative value (-5 works) then play the animation all the way through to rebuild the rigid body cache, then render.