We've been using a custom download URL since February. But recently, without warning, all of our logged in users were receiving a message "You must be logged in to download this file." when trying to download members-only files.
I found this post this morning but it didn't have any information:
I just tried all sorts of things -- checking permissions, the download.php file, re-upgrading the db and erasing old tables, everything -- but finally went back to that post and they too were using a custom download URL, so I removed ours and now downloads work properly.
The strange thing is that their post is 10 months old and ours was working fine until recently.
I'd prefer to use a custom URL, so if anyone knows a fix or what could be causing it I'd love to hear it.