This is a bit of an emergency situation. I run a shop combining OScommerce and PayPal. The shop sells digital downloads. I have configured most of the details, including the API and permissions etc. Thta seems to work fine.
When payment is completed the buyer is returned to the oscommerce shop but there is no download link available(even though the text for the link is there). It is probably only a very small problem and certainly will only take a few minutes to fix.
The content of the site is of an adult nature so only those who are not offended (or are legally allowed) should bid for this.