I have had trouble with Cyan's plugin. A Test Age I tried exporting following the tutorials over at GoMA and the Magician's tutorial have met with poor results.
With the GoMa tutorials I have had trouble with the textures.prp exporting, for some odd reason it doesn't export at all for me. Andy over at GoMa tried helping me, and at one point it did export but for some odd reason it just stopped exporting again the next time I exported.
With The Magician's tutorials, everything exported (except textures.prp but his tutorial that I followed didn't say anything about adding textures). So I converted it in Drizzle and proceeded to load it in Uru, all I got for that attempt was a black screen, nothing showed up.
Which was why I am still working with Blender. I have yet to get any age I create and export with the plugin to work for me.