HiNot heard of a multiple redirect problem before! Will try to help.
I went to your site and tried a to download via the Downloads menu itemGot message as below. As my browser, Firefox, does send a referrer I presume that I fall foul of the priveledge. Is that correct?
Saw that you are using a modified Files layout but that is not the 'challenge' - thought it was nice about Type and file type.Will send you a PM.Colin
"Notice Unauthorized access to downloads.
Error! Either you tried to start a download from an unauthorised resource or your browser did not send a referrer."