How to get asset URL from field in template
Hey Jeremy give this a shot to see if it works (from craft.assets)

{% for asset in entry.imagePrimary %}
     &lt;img src="{{ asset.url }}" alt="{{ asset.title }}"&gt;                               
{% endfor %}


If this doesn't clear it up, I'd double check the field Handle to make sure it's spelled correctly and there is an image within one of your entries.