Directory plugin setup

Hello,

I have some issues making the Directory plugin to work. I installed it fine and create 1 category and 1 item. However, when I link a menu item to the directory view, I see a blank page. Do you know why it would be?

The plug creates a page called "Listings," but I renamed it "Directory" I am not sure whether that makes it not work anymore, then again it never did and I am not able to test it.

This is the link to the page:
http://ceric.org/directory/

(What is the proper name to change the name of the page "Listings"?)

I am able to see the listing I created separately and If you click on "Events" which is the single category I created that does not work, but I am able to see the listing itself?

Any clues?
http://ceric.org/listings/incentiveworks/

Thanks,
Norman