I thought I'd try to do my part to cure the current puzzle shortage but I'm having trouble with the studio. I pick my genre in step one - then get a "null" image, some instructions and a "next" button in step two. I remember long ago having to use IE for something so I suppose I'll try other browsers next but I thought I'd go ahead and leave a message.
Unfortunately, the Studio is still running on Java, which Chrome has disabled. Thierry should be working on an HTML5 solution, but in the meantime, I suggest that you use either Firefox or IE.
Oh, and you'll also have to add PuzzlePicnic to the list of exceptions in Java Settings.