Images not showing up in item description

Apologies if this is a really obvious question, but I'm really new to Omeka. Whenever I upload a JPG, the file appears as a link, not an image, on the image description site. Here's what I see on the image description page, and here's what I see on the image's admin page.

From reading through other forums, I understand that the items/show.php document is what's at issue. Here's the relevant line from mine:
<!-- The following returns all of the files associated with an item. -->
<div id="itemfiles" class="element">
<div class="element-text"><?php echo display_files_for_item(array('imageSize' => 'fullsize')); ?></div>



Are you getting any warnings about ImageMagick not being configured?

What seems to be happening is that Omeka is unable to create the derivative images it uses to display smaller-sized images on the item show pages.

Can you make sure that you have ImageMagick installed and that you've set the ImageMagick path correctly in your Omeka settings panel? For example, if you have IM's "convert" binary installed at "/usr/bin/convert" the path setting in Omeka should be "/usr/bin".