I'm just dreading the inevitable dope-slap user error that this must be, but wonder if you could lend that particular dope slap, k3davis (or anyone else):
I did succeed once in getting a PPT, uploaded via the Media Library, to embed. After some other modification to the post however, the file fails to show. The source code reflects this error:
<!-- GDE EMBED ERROR: invalid URL, please use fully qualified URL -->.
I've replicated what I believe to be same exact steps I used that first time, and it still won't show. (I've tried in other posts. Tried restoring to the working version, etc., etc.)
I am using (and have validated) the File URL offered via the Media Library, e.g.,
Any clue or hints?
FYI: Looks like someone else might have been trying to find similar help: http://wordpress.org/support/topic/316417?replies=2