I'd like to visualize how many people are in several area of an office, and use a graphics, which background is an image (actually an architect plan - quite big) and foreground are several gauges that are dynamically updated based on a sensors data file. Manipulate works fine. But with the SaveDefinition option set to True - in order to export as a CDF - Mathematica is quitting unexpectedly ;-) due to the size (500 updates). What is the way to separate the background from the foreground ?