I had a bag full of music blocks, and gave it to a friend to donate. He gave me back a bag with 0/16 slots filled, ie empty. But! When I look in the bag, i can see alllll the music blocks. I can't do anything with them, but they sure look real. I put something in the bag to see if it changed anything. Nope, I just lost what I put in there, though. I can't see it or move it. http://www.flickr.com/photos/glassyglitch/6926032088/in/photostream/lightbox/