[Mighty.Karen]

I apologize if this has been covered, but I've read through several hundred responses and just can't go on.

I didn't download and install this, but a co-worker who is a bit less computer savvy did. There is an issue I'm SURE is simple to fix, but it ain't a-happenin' at the moment.
We have our vBulletin secured. The file libraries accessed through the main navigation would always present the user with the standard IE "This page contains secure and nonsecure information....". I figured out that if I went into the admin (vBulletin Options/Site Name\URL\Contact Details) and tacked an "s" onto http of our forum URL, everything was lovely. Well, almost. Go into the Libraries and its fine, select a category, fine, but once you select an actual link: "Internet Explorer cannot download...."

If I make the url http, its fine. https, it throws up. What am I doing wrong here??