One folder not visible

[im7]

After installing the newest developemental build of Rockbox on my iPod video, one folder is not visible. I've uninstalled & reinstalled Rockbox. I've deleted & added the problem folder. I've restarted the iPod. I've done all this a few times now. Nothing's worked. The folder that is not visible is the one I was last playing before the Rockbox install. The folder is viewable & playable when the iPod is connected to a computer. Any help is greatly appreciated.