Well, your suggestion to enable JA Pager helped me, anyway. I am just beginning to create a new JA Wall site, and building up from a blank template. I got the same error that zickofregos had upon installation, and enabling the plugin got me past the first step.
It's clear that it is going to take some time to set the site up the way that I want it to look, so many questions will be forthcoming.
BN