title: RuntimeError (Location of wkhtmltopdf unknown)
body: <p>I am trying to use pdf generator in my rails 2.3app. It is working fine
   in my local machine and pdf is generating. In my production server (nginix) it is not working and shows the error:</p>
  
  <pre><code>"wkhtmltopdf RuntimeError (Location of wkhtmltopdf unknown)"
  </code></pre>
  
  <p>In the config/initializers/wicked_pdf.rb.example file I have mentioned the path to the binary exe file as:</p>
  
  <pre><code>WickedPdf.config = {
     :wkhtmltopdf =&gt; '/opt/wkhtmltopdf-amd64',
     :layout =&gt; 'pdf.html'
     :header =&gt; {:html =&gt; {:template=&gt; 'layouts/pdf_header.html'}}
  } 
  </code></pre>
  
  <p>And in the opt folder there is wkhtmltopdf-amd64 binary exe file.</p>