It seems to be a broken link. I tried downloading it with the app.
brother,I would re-try it again as it does download directly on the site no problem: https://www.sermonindex.net/modules/mydownloads/singlefile.php?lid=20255&commentView=itemCommentsworse case you can download it from the site manually. Let me know if you run across any other messages that do not download!
_________________SI Moderator - Greg Gordon