Atahualpa 3.4.9 makes site invisible!

I was experimenting with version 3.4.6 installed by Wordpress. Then I visited this forum and saw that a newer version was available. I unzipped the file & uploaded it to the server into a directory Atahualpa349, and it showed up fine on my Dashboard.

When I installed this theme, my site disappeared, leaving only the message:
"Powered by WordPress & the Atahualpa Theme by BytesForAll. Discuss on our WP Forum"

See http://thewellness.net/blog/

Admittedly I used a site with no content, so there was nothing there than the usual sample Wordpress post.

I changed to another theme, and the content reappeared. It works fine when I install the old version too.

So what's up?

I was attracted by the apparent customizability of this theme ... still don't know whether it's possible to integrate static pages ... am now at a standstill ..