This morning I went to get it, and it's gone.
The culprit (pictured above) is not talking, and now I face the daunting task of searching under all the furniture (a cursory look this morning tells me that looking under immovable furniture is a Horror Unprecedented). ARGH. My own fault for putting it where he could get it. I just hope it doesn't a) get sucked up by the vacuum, or b) stepped on and broken.
Double ARGH, they won't let you switch back to the old version here anymore. WAH.