Problem with date based archives

I recently paid for a custom child theme based on the Genesis Framework.

With the custom child theme installed, my date based archives don’t work. I still get a page that renders, but no content.

I already know it’s theme related because it works when I switch back to the base Genesis Theme.

The designer hasn’t been able to fix the problem.

Any ideas on how I can fix this?

Here’s an example:

http://www.hivehealthmedia.com/2010/09/