Before you saved them, did they have an external object file? That is...to make the smart prop, did you import an object, parent it, then save it to the library? I'm willing to bet you need to edit the file in a text editor (or is there a handy utility for this yet?); to change the section that reads; { geomCustom numbVerts 4422 numberTVerts 4483 ----- 0.001 -0.002 -4.456 0.001 -0.002 -4.033 ----- } and replace it with : FigureResFile:Runtime:Geometries:a_folder:a_prop.obj Go find a prop with an external geometry file (DAZ requires their merchants to make them this way), and compare the changes in the file. It's simpler than I make it out to be.