ow in March Dropbox has finally changed it's API. An update is on it's way, but this might take a week or two. As a workaround, you can use the real Dropbox-App to send GPX and KML files to GlobalScout (just use Open in), or you can send the Data as an attachment of an eMail (again use the "Open in" functionality) and of course you can always go the classic way and use iTunes (Link) to exchange data. The last option is the build in WEB server, go to "settings / Import & Export Files / Web Server (lower left)".