Sign up/Submit Listing problem

*sigh* I'm having another issue with this plug-in. I'm testing to see if someone can add a listing. When I try to sign up here: http://directory.kennbrown.net/checkout/ I'm getting this message:
Sorry, we can't find the content you're looking for at this URL. Please try selecting a menu item from above or to the side of this message to get where you'd like to go.
I don't have anywhere to submit a listing. Before I updated my plugin so my categories to work I was able to submit a listing, now I can not. How does one really add their business from the front end? Obviously I can do it from the backend but members will not have access to the admin panel. When I'm signed in as the Administrator I can see Go To Profile and Add Listing, but when I log out I only see Sign Up. This sign up option wasn't in my previous install. Please help.