Sorry for not replying, I didn't see your post. I downloaded and watched the video you posted and it looks like DownloadStudio is not finding your login cookie for FileSonic, when I typed the url from the video into DownloadStudio I got (http://www.flickr.com/photos/43977020@N07/5490228177/). Did you check the box 'Remember me' when you logged in to FileSonic in Firefox? If you didn't check the box then DownloadStudio cannot find your cookie.