Product Categories and Tags in the Menu

Hello WPMU Dev Support,

I have two installations of MarketPress/GridMarket, here is the scenario:

1) has a lot of pre-installed plugins
- When you go to the Menu within Wordpress there are two boxes which allow you to select the Product Catagories and Tags into a menu

2) only has the MarketPress and GridMarket intsalled
- The two boxes for Product Categories and Tags do not appear as options within the Menu

Have I missed something with MarketPress/GridMarket to get these boxes to appear in the Menu dashboard? OR is it another plugin which recognises Custom Types and Taxnomies and sets them up in the Menu dashbaord?

Can you please advise.

Kind regards,