I haven't noticed the ezcomposites going missing.  You should probably set the ezCompositeIndex to like 1 or 2 so she appears more to the left (it keeps the positions more consistent with the regular composites).

There's definitely too much light going on with Kim's ezcomposites though. (Saiki and Elenas were fine). Some lighting probably somehow carried over from a previous scene.  When that happens I usually just export only the model as a scene subset, then reload the office ezcomposite scene fresh, then merge in the model.

I've finally gotten around to starting rendering on Vivian, so that should be ready soonish.