I've added a new asset container and I've added a field the same way I have for other asset containers. When I use the assets tag to pull the permalink, the URL seems to be malformed. Is there something I'm missing? I'm doing everything exactly the same as I have for the other containers as far as I can tell.

This is what outputs when I use the permalink tag:

http://localhost/ninesixteen_cms/header_backgrounds:://header1.jpg