static MVD loadMVD() throws Exception
	{
		MVD mvd;
		File m = new File( mvdFile );
		if ( m.exists() || (dbConn != null && dbConn.length()>0) )
			mvd = MVDFile.internalise( m, Utilities.loadDBProperties(dbConn) );
		else
			throw new FileNotFoundException( "Couldn't find "+mvdFile );
        mvd.setDirectAlign( directAlignOnly );
		return mvd;
	}