def load(self, category, force=False, y=None):

        # called to early
        if not category:
            log.ERR("load(None)")
            return
        self.current = category
        do_save = False

        # get data from cache or download
        if force or not category in self.streams:
            log.PROC("load", "update_streams")
            self.status("Updating streams...")
            self.status(-0.1)
            if category == "empty":
                new_streams = self.empty_stub
            else:
                new_streams = self.update_streams(category)
  
            # Postprocess new list of streams (e.g. assert existing title and url)
            if new_streams:
                try:
                    new_streams = self.postprocess(new_streams)
                    do_save = True
                except Exception as e:
                    log.ERR("Updating new streams, postprocessing failed:", e)
  
                # don't lose forgotten streams
                if conf.retain_deleted:
                   self.streams[category] = new_streams + self.deleted_streams(new_streams, self.streams.get(category,[]))
                else:
                   self.streams[category] = new_streams
  



            else:
                # parse error
                self.status("Category parsed empty.")
                self.streams[category] = self.nothing_found
                log.INFO("Oooops, parser returned nothing for category " + category)
                
        # Update treeview/model (if category is still selected)
        if self.current == category:
            log.UI("load() → uikit.columns({}.streams[{}])".format(self.module, category), [inspect.stack()[x][3] for x in range(1,5)])
            uikit.do(self.columns, self.prepare(self.streams[category]))
            if y:
                uikit.do(self.gtk_list.scroll_to_point, 0, y + 1)   # scroll to previous position, +1 px, because
                # somehow Gtk.TreeView else stumbles over itself when scrolling to the same position the 2nd time
  
        # save in cache
        if do_save:
            self.save()

        # unset statusbar
        self.status()

        
    # Called occasionally (by some plugins) while updating station list
    def update_streams_partially_done(self, entries):