app/views/submissions/_order_errors.html.erb
<h2 class="error">Sorry, this Order cannot be saved due to
<%= pluralize(@presenter.order.errors.count, "error") %>
</h2>
<ul class="errors">
<%# Validations seem to be run twice... -%>
<% @presenter.order.errors.full_messages.uniq.each do |error_message| -%>
<li><%= error_message %></li>
<% end -%>
</ul>