Re: On attachment file permalink
The settings have a line that looks like this:
$bb_attachments=”participate”; // minimum role to download original = read/participate/moderate/administrate
If you’re signed in, can you download the attachment? If so, the default for downloading content was probably left to “participate”… which requires downloaders to be registered. That’s why that “Sorry, download is restricted” message is appearing.
If that’s the case, you will want to take set the download role to read, not participate. Good luck!