Doing a file comparison before upgrading from 1.3.6 to 1.3.7 I found the the following files do not seem to have been updated with bug fixes as discussed here in the forum:

email_template_checkout.html
email_template_contact_us.html
email_template_coupon.html
email_template_default.html
email_template_direct_email.html
email_template_gv_mail.html
email_template_gv_queue.html
email_template_gv_send.html
email_template_low_stock.html
email_template_newsletters.html
email_template_order_status.html
email_template_password_forgotten.html
email_template_product_notification.html
email_template_tell_a_friend.html


In the above files I believe the following lines need updated:

Find:

Code:
body {background-color:#ffffff; color:#000000; font-family:Verdana, Arial, Helvetica, sans-serif; text-align:center;}
Change to:

Code:
.body {background-color:#ffffff; color:#000000; font-family:Verdana, Arial, Helvetica, sans-serif; text-align:center;}
Find:

Code:
<body>
Change to:

Code:
<body class="body">
Jeff