1 check that you see the download files in your /download directory
2 check that the filenames match what you have set on your Attributes and are written in proper upper/lowercase and extension
3 check the directory /download for its permission
4 check the file:
/download/.htaccess
that it includes the extensions for your download filenames on the lines:
Code:
<FilesMatch ".*\.(zip|ZIP|gzip|pdf|PDF|mp3|MP3|swf|SWF|wma|WMA|wmv|WMV|wav|epub)$">
5 test in your browser that you can access one or two of the files:
your_domain_name.com/download/your_filename.ext