No More Than 3 Columns

Sounds like the default width of the columns might be too wide for your layout. You can change this by setting the “width: option in the shortcode: https://www.ads-software.com/plugins/multi-column-tag-map/installation/

Can you post a link to a page you are having issues with?

I am also having this problem, except it won’t allow me to have more than 2 columns. I am working off a local site, so I’m unable to post the link. I’m testing it on the Twenty Thirteen theme.

@zwrodgers, first thanks for searching and not opening up another post. Your issue, as well as the issue with the 2013 theme, is this:

.entry-header, .entry-content, .entry-summary, .entry-meta {
    margin: 0 auto;
    max-width: 604px;
    width: 100%;
}

In the installation instructions:
https://www.ads-software.com/plugins/multi-column-tag-map/installation/

The default width is 190px. You are free to modify that and can in the shortcode. In the mctagmap.css:

#mcTagMap .holdleft, #sc_mcTagMap .holdleft {
	width: 190px;
	display: inline;
	margin: 0 20px 0 0;
	float: left;
	text-align: left;
}

Notice the 20px right margin (190 + 20 = 210) so the theme’s content is 604px and the default with of a column with margin is 210px. The script does not add the margin to the last column so if in your shortcode you have [columns=3] (190 + 20 + 190 + 20 + 190 = 610) you can’t put 610px of stuff in a 604px wide box.

So in short, your issue is exactly the same issue selym had above.