The page redirected me to the file link and now I get "query failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1" when I click on the download link

I bought two files through the paypal method, and after I payed for the files it redirected me to the main page of this site. I didn't get a link or anything that would allow me to download the files I paid for.... Where do I download them?