OK, figured it out. It's your <prizes> token.
It appears I forgot to set default values for the attributes "rotateMax" and "rotateDelay". In your token, you didn't set these values, so they will end up with a value of "0" (but they should default to more reasonable values, and also prevent you from setting them to 0). This is causing the problem.
So, add these attributes to your <prizes> token. I'd recommend editing the Payouts cell, highlighting the <prizes> token (make sure you highlight the whole thing, from < to >, and nothing else), and then press the Insert Token button. The Insert Token dialog should open with the prizes token already selected, as well as the options that you specified in the token already configured. Scroll down to the bottom and add the two attributes mentioned above. Make sure to set them to reasonable values (the defaults are good, but for your layout you may want to change rotateMax to something like 2 or 3).