MovingBox and Expose - first slide does not display

I have set up a ‘page previewer’ to display the table of contents of a book. To do this I have used expose to pop up a lightbox. In the lightbox i have a jack stack for styling, a letterpress stack for the header, a movingbox2 stack for the page display (10 jpg images) and a second, synced movingbox2 stack as a page index / navigator.

The problem is, when the lightbox appears neither of the movingbox stacks displays their content. as soon as you navigate in the movingbox the content appears.

This is what happens when the lightbox appears:

This is what SHOULD happen:

Neither of the movingboxes is set to autoplay - and I don’t want that feature. to be on.

Anyone got any advice?