Right,
As I suspected, the object came with another world I had installed. Now I've completely eradicated it from my game and re-exported the Cladbridge world file (which is now almost 10GB lighter!!).
If you would like to download the new version it is on Mediafire again:
http://www.mediafire.com/?0l29i8uabijpb0lUnfortunately, the exchange is still not uploading so it will be only on mediafire for the forseeable future.
I'm sorry again about the viral object. I've learnt my lesson. Hope you now can enjoy the clean world.
