A Media object does not get converted what to do?
When Media object is not converted, it remains highlighted in red.
In the right part of the window of the converter, right click on the thumbnail of the Media and select "Reveal in Finder".
Open the aof object in Artlantis 5, in the open dialog are listed the missing Media. Delete it ot them, open the file, then save the document as an Atlantis object .atlo file format.
Mac OS 10.6.x
Mac OS 10.7.x
Mac OS 10.8.x
Mac OS 10.9.x