When a movie works fine in authoring but does not work in a projector, it's usually down to a missing xtra or dll, or a firewall configuration issue.
i don't know the manufacturer of your xtra. maybe you can ask him or tell us .
also would be great to know the version of your Director
and yes, it is possible, that there is a different version for projectors/authoring.
e.g. Directxtras were distributed this way.
maybe you can find an xtra in the MileHighTable at Deans tutorials
You should buy this xtra then use the project version xtra to publish movie.