This is happening for me too. I am also trying to download Oblivion (Armor, specifically) mods. It is even happening where there are two (or more) files on the same page. One (or more) file will download OK, then one (or more) will return the 404 File not Found error. I've never had this happen before today. Specifically, this page: http://www.nexusmods.com/obilion/mods/17122/? The second file link on the files tab (http://filedelivery.nexusmods.com/101/kunoichiarmor_Extracolors-17122.7z?fid=24918...etc) returns the 404 error. Anyone have any ideas why this is happening and how to fix it?