"it'll be a one man action for a group of readers" - Such is the job of every Admin.

Working here, on Win7.  I wonder if it's because I've mounted my folder that holds my Comics folder...

My Comics folder lies inside my R: drive.

I think the more important question, is why would you want the comics squared?

And how would you have them squared?  Cropped? But cropped to where?  The titles in your example are all at the top, but that isn't always the case. 

 I don't think there's a uniform way to do what you're asking.

oh...  lol I completely overlooked that.

I'd think the epub format being supported by Ubooquity itself is all you need.

Please supply the log file that shows the books being added and dropped.

Yep, exactly the same setup I had that caused the above issue.  Mine was just fixed by removing my own access to my Kids' comics folder.

Awesome to hear that it's fixed in the new release!

Very quick and nice turn around.  Great job!  :D

I insptected the Default theme to see how it handles this actually.  Had to set it to the below:  

Looks like HTML maintains the images aspect ratio, so only allowing a square image's width to 160px, keeps it from stretching.

 -- Add "max-" to the width & height, and set its max to the same as the cell size.

.thumb {
display: block;
    max-width: 160px;
    max-height: 230px;
    text-align: center;
}

.thumb img {
    display: block;
    max-width: 160px;
    max-height: 230px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.12);

}

And I went with the Default theme's cell size, to allow more to fit on the screen at a time.

-- Determine the full cell size

.cell { position:relative;     float: left;     width: 160px;     margin: 10px 10px 20px 10px;     background-color: #fafafa;     border-radius: 2px;

}

If you added any custom setting, I think the cell width is all you'd need to change.

The "Publisher Page" isn't really hacked in, it's just my main landing page since that's how I organize my comics.

\\comics\Publisher\Series\issues

I do have one issue.   Can you square out the Publishers page in the Comics?  Actually, I organize my books in a similar fashion, so probably there too.

I pulled all of my folder images from Comixology, so they're all stretched now.

.thumb {
display: block;
    width: 240px;

    height: 240px;

}

.thumb img {
    display: block;
    width: 240px;
    height: 240px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.12);
}

I changed both of these in the comics.css file, to square it out.

There's no pic of your Publisher page up there, so not sure how you organize and what you were seeing.

Damn!  Out of nowhere, a new theme that looks super slick!  And, it looks like your screenshots may all be from a mobile device, and you fixed the centering issue for the Read & Download buttons??!