yeah that happened to me once too. stupid angelfire.
just try hitting Refresh once or twice, or clicking "save target as". or select the URL again and hit Enter. i have no idea why it does that, the files are there, like I said it happened to me before too. but when I showed them to Redwing's brother last night, he saw them both just fine.
but yeah, try right-clicking it and click "save target as" or just hit refresh. dont worry, it will show up. and when it does, it will be definitely worth the couple extra clicks.