Users unable to edit their listings

Hi there

If you visit my site http://www.mybizswap.co.za, you are able to add a listing (it asks for username and password creation), you can then choose a package and list your business. Cool!

Once the listing is submitted, the user sees a message that the listing has gone for approval (which is correct – admin receives the notification to approve this etc.). The problem is that the website offers the user to edit the listing and when this link is clicked, it goes to an error message

“This is somewhat embarrassing, isn’t it?

It seems we can’t find what you’re looking for. Perhaps searching can help.”

Please can you help me to fix this?
Thanks