I can't believe I didn't think of that. Thanks! It's working now.  

There's an option to download comics from the server (I assume for offline viewing), but I can only access them from the download window. Can they be accessed from the home and browse screens as well?

I can't get Kuboo to detect my server at all. I did all the steps mentioned above and I get the XML in the browser and the same ip 192.168.0.11:2202/ubooquity/opds-comics/ works perfectly on Challenger Viewer, so I'm pretty sure it's a Kuboo issue. Does the application have any logs I could look at to maybe try to troubleshoot what's going on?