gistfile1.rb

# Error
can't convert nil into String

Extracted source (around line 47 </a>):

44:            </p>
45: 
46:            <p>
47:               <%= image_tag(@customer_setting.image_url(:thumb)) if    @customer_setting.image?%><br/>  
48:            <p/>
49:         </fieldset>
50:  


Codesnippet:
<%= form_for(@customer_setting, :html => {:multipart => true}, 
 :url =>  project_administration_customer_setting_path(@customer)) do |f| %>

....
<%= image_tag(@customer_setting.image_url(:thumb)) if   @customer_setting.image?%><br/> 
....
<% end %>