Error trying to generate a quote to invoice

[diddly]

I tried and tried but nothing showed except this error:

An error has occurred in nBill (administrator)! Details of the error are given below:

User ID: 62
Software Version: 2.2.0
Domain: http://clients.vecino.com
Date/Time: 03-Nov-2011 05:11:53 am
IP Address: 80.38.251.39
Page: /administrator/index.php?option=com_nbill
Referrer: http://clients.vecino.com/administrator/index.php?option=com_nbill&action=orders
Error Log ID: 108
Error Message: Invalid argument supplied for foreach()
File Name: /var/www/virtual/vecino.com/clients/htdocs/administrator/components/com_nbill/admin.html/orders.html.php
Line Number: 1564
PHP Version (and OS): 5.2.0-8+etch16 (Linux)
CMS: Joomla!
CMS Version: 1.5.x

Please any way to fix this? Thanks.

[netshine]

Please submit a support ticket as I will need access to your site to look into that.