You have to edit libraries/joomla/application/component/controllerform.php to fix this issue;
Find:
protected function allowEdit($data = array(), $key = 'id') { return JFactory::getUser()->authorise('core.edit', $this->option); }
Replace with:
protected function allowEdit($data = array(), $key = 'id') { if (JFactory::getUser()->authorise('core.edit', $this->option) || (JFactory::getUser()->authorise('core.edit.own', $this->option))) { return TRUE; } else { return FALSE; } }
Enjoy
