I think you have one or more aliases inside your Bookmarks, Recent Connections, or Other Editors folders that point to your home computer and Yummy is asking the OS to resolve them, producing this warning.
Take a look in:
Mac HD -> Users -> yourname -> Library -> Preferences -> Yummy FTP
Inside there you will see the Bookmarks, Recent Connections and Other Editors folders. While Yummy FTP is not running, examine the contents of both those folders and move any aliases to the Trash, then start Yummy FTP again.