Embedding a marketplace using the php method (pagination)

I've setup a marketplace using the php function to aggregate all the products on one page (thanks, BTW, from you all in your advice and help in getting the template file created!).

The pagination of the global products display doesn't seem to be working. I did read somewhere that it wasn't working yet, but that was two versions of MarketPress ago.

Anyhow, this is the code snippet I am using to display my marketplace:
<?php mp_list_global_products( 'text=none','paginate=1','page=20','per_page=20' ); ?>

Can you guys review the syntax and arguments here and tell me if I've written it correctly. I'm trying to display 20 products per page, paginated and without text description.

It can viewed online here: http://teatra.de/marketplace