Hi Ryan
Thank you for your swift response and fix,
The fix worked great in my end.
I would have also felt ecstatic if the following problem didn't arise,
Basically the customer is successfully taken to Order completion page 
.
But the order is marked as pending instead of Payment Received.
Additional information,
Workflow-NG configuration.
Check the order balance : Balance is less than or equal to $0.00.
Update the order status : Payment received.
IPN Debug information
IPN transaction verified.
Receiving IPN at URL for order 102.
Array
(
[mc_gross] => 2.00
[invoice] => 102
[item_number1] => paypaltesting
[payer_id] => Alphanumeric code.
[tax] => 0.00
[payment_date] => 22:03:35 Feb 04, 2008 PST
[payment_status] => Completed
[charset] => windows-1252
[mc_shipping] => 0.00
[mc_handling] => 0.00
[first_name] => (First name)
[mc_fee] => 0.38
[notify_version] => 2.4
[custom] =>
[payer_status] => unverified
[business] => business email address
[num_cart_items] => 1
[mc_handling1] => 0.00
[verify_sign] => Alphanumeric code
[payer_email] => Payer email address
[mc_shipping1] => 0.00
[tax1] => 0.00
[txn_id] => Transaction ID
[payment_type] => instant
[last_name] => Last name
[item_name1] => Paypal testing
[receiver_email] => same as business email address
[payment_fee] => 0.38
[quantity1] => 1
[receiver_id] => Alphanumeric code
[txn_type] => cart
[mc_gross_1] => 2.00
[mc_currency] => USD
[residence_country] => US
[payment_gross] => 2.00
)From store administration page.
Admin comments shows the following,
02/05/2008
11:33:42 AM - PayPal IPN reported a payment of 2.00 USD.
02/05/2008
11:34:01 AM - Order created through website. Payments tab
02/05/2008
11:31:18 1 PayPal -$2.00 $2.00 PayPal transaction ID: So everything seems right, but the order is marked as Pending,
I hope cassidy would also experience this problem.
Joined: 08/31/2007