Hi All
Please keep in mind that the 'invisible' content function on the Download Station will only work on the Download Station website. Last check, it did not 'hide' content from the listings in Content Manager.
However, if you wish to use the Download Station to test content before release, then you should use the 'preview area' method of uploading. The 'preview area' allows you to provide download links for the content, without having it publicly available. Content that is not approved/rejected by you in the preview area will be removed after 30 days.
Regards