MarketPress Product Variation not displaying

Howdy all,

I'm in the process of creating a custom product page for marketpress. All seems to be going fine, apart from when I add variations only the choose option button displays without the different variations to select.

When there are no variations for the product the price and add to cart button display fine.

You can see it here
http://aclassindustry.dunskii.com/store/products/stitch-hoodie/

Cheers in advance

D