[TYPO3-commerce] paypal2commerce Probleme

[Kevin Ulrich Moschallski]

Hi,

i'm currently trying to setup paypal2commerce.
I installed the extension and saw that the payment artcile already was 
setup by the extension. When i look into the database i see that paypal 
is set as classname.

When i do a order with paypal as payment method and get to the checkout 
i get this error after submitting:

Warning: array_merge() [function.array-merge]: Argument #2 is not an 
array in 
/var/www/verbuzzer/htdocs/typo3conf/ext/commerce/pi3/class.tx_commerce_pi3.php 
on line 649.

The code in this line looks like the hook for the postpayment.

Does anybody know what's wrong with my setup?

Thanks for help in advance.

Greets
Kevin Ulrich Moschallski