Listings not showing up on home page

Sorry for the basic questions – checked the docs for Directory but they are a little thin.

I’ve created a couple of listings, but they aren’t showing up on the main page ( In addition, the page is showing a warning error in the title.

This is with a brand-new, clean WP install and the latest Directory. I’m using the BuddyPress Corporate theme, although I tried switching to the Twenty Eleven and SimpleMarket themes with no change.

I would like to a) show the listings on the home page by default and b) not have an error message for the title of the listing page.