Unfortunately, the exception occurs right after starting up the SST server
If the error occurs when the server is started then something is wrong. You need to check your configuration.
. . . or is the error occurring during deployment?
That is the resource not found. You will have to check the host file and see what 'mynamedhost' is set to or should that be 'localhost? As mentioned before, if the server will not run then that resource will never be found. With the server running, you should be able to enter that URL in a browser and see the XML file. If the browser reports a problem then things have not been setup properly.