I started the installation of the NewsCenter theme on my Mac using a MAMP stack so I could quickly build the site to my specifications. The installation went great, but once I started to run through the updates I kept getting an AJAX error. I made the mistake and selected all updates to update at once, so there's a chance something in the update process didn't agree somewhere.
I have since installed the NewsCenter theme on my actual hosting account, ran through all the updates (one at a time) and everything is working as expected, no errors.
Just thought I would post this in case someone else encounters similar trouble.