Problems with multisculptie baking/exporting

I've been following what I've found at http://www.dominodesigns.info/node/233, but I'm having a problem.  I've made sure to individually bake each component, then parent them together, but not all of the objects export for some reason. 

The top image is what I'm trying to bake/export, and the bottom one is what the script actually creates in world.