Organic groups not showing

In current dev version it is not possible to select groups when sending emails. There is a small bug in mailout_send.inc

142: // Build options list of all Organic Groups.
143:  if (module_exists('og')) {
144:    $options_groups = og_all_groups_options();
145:    // This field allows sending of mailout to mailout lists.
146:    if(count($group_array)) {

Line 146 should be:

146: if(count($options_groups)) {