I have a folder I would like to share but it gives me an error saying I can't share because there is a shared folder below. How do I find this folder to move it? There are hundreds of folders and no hint anywhere as to where it might be. I guess I could start trying to share sub branches but this is going to take forever especially if there are multiple ones. I went to the Sharing tab on Dropbox.com but none of my shared folders show there.