I'm rendering out your scene and i notice some very strange things going on in the pass system, related i think to how you have imported some of the stuff into the scene.
The new pass system is quite fragile. I'm doing a debug now to work out exactly why it's broken down. I'll do a video tomorrow as it's 12:30am now and if i wake the misses up doing a video tutorial I'll have bigger problems than a broken maya scene file 
David
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"