Looks like this was introduced with 3.6.5 recently, as the login / register view was extensively tested with our automated and manual tests. This should be a simple code fix and I'll put out a release later tonight/tomorrow. In the meantime, you can update /components/com_jfbconnect/views/loginregister/view.html.php.
At line 67, change this block of code:
$language = JFactory::getLanguage();
$language->load('com_users');
JModelLegacy::addIncludePath(JPATH_SITE . '/components/com_users/models');
$userModel = JModelLegacy::getInstance('Registration', 'UsersModel');
$this->data = $userModel->getData();
JForm::addFormPath(JPATH_SITE . '/components/com_users/models/forms');
JForm::addFieldPath(JPATH_SITE . '/components/com_users/models/fields');
$this->form = $userModel->getForm();to
JForm::addFormPath(JPATH_SITE . '/components/com_users/models/forms');
JForm::addFieldPath(JPATH_SITE . '/components/com_users/models/fields');
$language = JFactory::getLanguage();
$language->load('com_users');
JModelLegacy::addIncludePath(JPATH_SITE . '/components/com_users/models');
$userModel = JModelLegacy::getInstance('Registration', 'UsersModel');
$this->data = $userModel->getData();
$this->form = $userModel->getForm();
It's essentially just moving up two lines of code for addFormPath/addFieldPath.
-Melissa
yahoo login error
