cinolas

I'm not even sure why this text is being sent to PayPal, the payment page on PayPal shows the chosen shipping method only, not all available. I'm weary of changing code in the PayPal App module since I understand so very little of it. Could you recommend a change?
I fully understand that the bug is actually at PayPal. But us store owners who need to accept PayPal payments are at their mercy. The "bug" on the PayPal App would be the unhandled exception: ie catching the problem on osCommerce, before it gets to PayPal (if that's even possible). Or perhaps at least emergency-truncating the text at 256 chars so it doesn't cause the payment process to fail for the end user.
This problem could creep up on many stores without them even having to change anything, if the courier company changes their service names and adds too many characters for example. PayPal didn't sound like they were planning on expanding their character limit...
Cheers!

The customer that purchased the gift voucher should get an email when it is released. 

I have not worked with @raiwa directly, however he has provided me unparalleled support for various areas of osCommerce through the years. He has always been helpful, courteous, professional, concise and patient, even though some of my requests were clearly beyond what would be considered "regular technical support". His generosity, and ability to see clearly through the various slightly-confused bug-reports from non-coder users, never cease to amaze me. A high quality human!

I have not worked with @raiwa directly, however he has provided me unparalleled support for various areas of osCommerce through the years. He has always been helpful, courteous, professional, concise and patient, even though some of my requests were clearly beyond what would be considered "regular technical support". His generosity, and ability to see clearly through the various slightly-confused bug-reports from non-coder users, never cease to amaze me. A high quality human!

AJAX Attribute Manager 3.0 (CE) totally did the trick.
Great installation documentation btw. Thanks again!

I believe I found the problem:
// do not decrement quantities if products_attributes_filename exists if (!$download_selected) { $stock_left = $stock_values['products_quantity'] - $actual_stock_bought; tep_db_query("UPDATE " . TABLE_PRODUCTS . " SET products_quantity = products_quantity - '" . $actual_stock_bought . "' WHERE products_id = '" . tep_get_prid($order->products[$i]['id']) . "'"); //++++ QT Pro: End Changed Code You have this part only included in the first post which I checked now.
I believe the line which sets the product status to false is missing here. It should be added:
if ( ($stock_left < 1) && (STOCK_ALLOW_CHECKOUT == 'false') ) { tep_db_query("update " . TABLE_PRODUCTS . " set products_status = '0' where products_id = '" . tep_get_prid($order->products[$i]['id']) . "'"); compare to the commented part you posted.
 
In general you shouldn't change the way a code is modified. If you apply changes on your own, you make it much more difficult to give advice. If you wish to keep original code, keep a backup of the modified file.