This is a robotic flower I've been working on as a prop for another scene. Node setup is something to shake a stick at too.
check me out at http://youtube.com/masterxeon1001/
i packed em. im all about sharing. I guess it the skymap hdri didnt make it through the drones.
Which version of Blender are you using? I have a missing datablock in the compositing node tree. (The output of the node is labelled "Vignette".) Just to be sure, I checked with the very last nightly built available for my OS (r51563) but I still get a result in tones of magenta. Things improve when I move that missing node out of the way but I still miss the background sky... while there look like to be quite a lot of textures packed in this blend, including a few I feel you did not really intend to release on the Wild Wide Web. ;-) However... Very nice work! I will put it in my favorites when you give me back the sky. :-)