[TYPO3-shop] Put in basket button does not work in Single View

[rocky ou]

Hey,

I set up a webshop using tt_products but The Put in basket button does 
not work in Single View. Any idea?
I'm using TYPO3 4.3.3, tt_products 2.6.2, tt_products template is 
shop_template-css-eng.html

Thanks!
Rocky