Can't get logo to display in Atahualpa 3.7.1

Hello. I just installed Atahualpa 3.7.1 and I can't get the logo image to display. The site is a subdomain site of a WordPress Multisite blog network, and I need to display a unique logo that is different from the logo that displays on the other sites in the network that also use the Atahualpa theme.

The blog title and tagline are disabled, and I did include the file name of the logo in style-and-edit-header-area/show logo image, but when I visit the homepage to view the logo, there is no image there, only text. This is the link to the site I'm testing Atahualpa 3.7.1 on:
esdras . now-you-know . org

How do I fix this?

Thanks