No Content Beneath Banner

Greetings -

I just began volunteering with a non-profit organization and have apparently been tasked as the webmaster for their website (which seems to have been done in wordpress). Unfortunately, I have zero experience with wordpress (this is my first introduction to it). Just under a week ago, all content beneath the banner stopped displaying (no posts, no sidebars, nothing).

URL: www.capca.org
Wordpress Version: 3.3
Atahualpa VersioN: 3.7.1

I tried disabling all plugins but that did not resolve the issue. I changed the theme to Twenty Eleven and content DID appear. I've reset settings for Atahaulpa and that had no effect. I removed all of the items in the left sidebar, and still nothing. Any suggestions on what I should try next? When I viewed the source code, nothing displays beneath:

" <!-- Main Body -->
<tr id="bodyrow">




<!-- Main Column -->
<td id="middle">
"

Any assistance/suggestions would be GREATLY appreciated!