Update: I've figured out my issue. Capitalizing the extensions as .CBZ/.CBR causes this issue for some strange reason. Changing the extensions to .cbz/.cbr fixes all problems.

Many thanks to Seth Chhim, Author of ComicViewer for ubooquity app, for his help and patience in helping me trouble shoot this problem as I originally came upon the problem when I was attempting to use his app and mistakenly believed the issue was with the app.

Whatever became of this problem? I've run into the same issue when trying to use ubooquity and can't for the life of me figure it out.

Oddly enough, If I use challenger Comic app, I can view my comics just fine. But I think this problem is keeping me from using another app I'm interested in trying out.