The boss uploader has been fixed! With a couple of changes. First, your old bosses aren't there... per se. They're all safe and secure in the 10-part .rar file I've added. Second, when you upload, it now changes the filename to "user_-_boss.ext" where 'user' is your username, 'boss' is the name you give the boss and .ext is the original file's extension. Thirdly, you can now upload .feds directly. Apparently GoDaddy didn't like that because they're awful, we'll see how iPage copes.
Credit to coronaa, and of course to me because I'm brilliant.