Sculpy Help Please!

[kittenbitten.livejournal.com]

I just bought two big blocks of white Sculpey III, since I had seen a lot of cool sculpey stuff here lately and I wanted to try it out myself. I also have some colors of Fimo that I bought to try to do some canes and stuff. I've been playing with the Fimo and I think I'm doing okay with that. But I just opened up one of the blocks of Sculpey III and it's really really really sticky. It sticks to my hands, it sticks to the mold... I can't keep it in any kind of shape because it sticks to everything I set it on.

Is there anything I can do to get it to firm up so I can use it? It's completely unusable at this point.