Filtering doesn't work, due to old API calls.

Filtering works only for flexinode modules, as the API calls need to be updated. The last elseif clause in event_page() needs to be:

  if ($types) {
    // The '+' character in a query string may be parsed as ' '.
    $types = preg_split('/[+ ]/', $types);
    foreach ($types as $type) {
      if (is_numeric($type)) {
        $ctype = module_invoke('flexinode', 'load_content_type', $type);
        if ($ctype->name) {
          $temp[$ctype->name] = 'flexinode-'. $type;
          $filter[] = $ctype->name;
        }
      }
      elseif (substr($type, 0, 10) == 'flexinode-') {
        $ctype = module_invoke('flexinode', 'load_content_type', substr($type, 10));
        if ($ctype->name) {
          $temp[$ctype->name] = $type;
          $filter[] = $ctype->name;
        }
      }
      elseif (array_key_exists($type, node_get_types())) {
        $node_types = node_get_types();
        $temp[$node_types[$type]] = $type;
        $filter[] = $node_types[$type];
      }
    }