on a different forum? If you are the same person, strange that since then you did not get a reply. Anyway, this is a Chrome download file; some say it should be invisible. If you see files like DS.store on the desktop, you may have somehow activate hidden file view. If not, just restart the computer. Looks like after that, if the file is still there, you may just right-click (control-click) on it, get info and change permissions. Then you would be able to trash it. Make sure that Chrome is not running; if it is in your startup items and opens up, quit it.