1) Download this torrent
2) Download and install the Creature Creator TRIAL from www.spore.com/trial/
3) Copy the "Data" directory from the .zip you downloaded with this torrent into the SPORE directory and over-write the existing Data directory.
4) Launch the game (TRIAL) and you will have roughly 75% of the creature parts. It is unknown whether these are all of the parts that come with the bought version of the Creature Creator or if it is the result of this fix not working perfectly, but it's the best we have right now.