[Typo3-shop] basket init error

[Tim Freeman]

I better should ask here ?!?!?!!

Hi all I have typo3 3.8 installed fine with TV0.4.

just installed tt_products and did everything linke in the tutorial.
But when I klick on a page with tt-products on I get always the 
following error:

Warning: Missing argument 2 for initbasket() in 
/html/typo3conf/ext/tt_products/pi/class.tx_ttproducts.php on line 1095


What did I miss, and whats wrong??

Thanks