Download link not showing up when selling downloadable products

[scottsw]

I have downloadable products for sell. I have them set up properly and everything appears to be OK untill after you make the purchase. The link for the download does not show up. It just has the message "Download here" with no link. I have read through many posts on oscommerce.com forums where a lot of people where having the same problem. But everything I have tried does not fix it. Here is several things I have done:

1. Enabled the download tab in configuration/download section in admin.
2. Set up the product atributes for my product. Set the amount of days available, number of downloads, etc...
3. Changed the permission of the download folder and pub folder to 777
4. Uploaded my file to the download folder.
5. Rechecked the link to make sure it matched the link in the product atributes.
6. Added the / slash before and after the pub and download within the configure.php file in includes folder.
define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . '/download/');
define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . '/pub/');
7. made sure the weight of the product was set to 0.00.

I don't know what else to try. The link still doesnt' show up. Any suggestions please???