def _load_sets(self,directory):
        """Loads sets from set file and return
        as list of strings
        """
        # --- Read sets out of file
        _sets=[]
        try:
            fullfile=os.path.join(directory,SET_FILE)
            lsets=open(fullfile).readline().split(',')
            for tag in lsets:
                _sets.append(tag.strip())
        except:
            logger.error("No sets found in %s, FB needs an album name (%s)"\
                    %(directory,SET_FILE))
            sys.exit(1)

        return _sets
Loads sets from set file and return
        as list of strings