Not opening: colomatslideEffect is not defined

Hi,

I’m not able to get the plug-in working properly on my site. The trigger text shows up, and the arrow turns when I click it, but the Target content is not revealed. When I click, a Javascript error appears in the console:

Uncaught ReferenceError: colomatslideEffect is not defined collapse.js?ver=1.5.7:325
(anonymous function) collapse.js?ver=1.5.7:325
x.event.dispatch jquery.js?ver=1.10.2:4
v.handle

As a test, I used the sample text from the c-o-m documentation page as is in a post. The displayed source (and a few lines of context) is here. (I’m not able to link to the whole page without the client’s permission):

<div id="content">
		<div class="header">
			<h1 id="artist_sugao">名前さん</h1>
		</div>
		<div class="section">
			<h2 class="collapseomatic " id="id1066"  title="Trigger Text">Trigger Text</h2><div id="target-id1066" class="collapseomatic_content ">Target Content</div>

<h2 class="subtitle">名前さんのご紹介</h2>

Thanks,

Tony

https://wordpress.org/plugins/jquery-collapse-o-matic/