Image asset url is not being output

Question

After going through the documentation I believe that this is the correct code to output the url for the asset field but its not working and I have no idea why. Please help!

{% nav program in craft.entries.section('program').level(1) %}
  {% set active = entry is defined and program.isAncestorOf(entry) %}

  <div class="{% if active %}active{% endif %}">
      {% if program.featureImage|length %}
        <img src="{{ program.featureImage.first().url }}" alt="{{ program }}">
      {% endif %}
      <h3 href="{{ program.url }}">{{ program.title }}</h3>
      <p>{{ program.description }}</p>
  </div>

{% endnav %}

Answer 1

So after looking through other craft websites to see how they where able to get images to work I discovered what I did wrong when setting up the asset source. The thing is though that the craft documentation is not very helpful in this regard, also there are no errors or helpful output to indicate that my configuration might be the issue.