There is a bug on line 942 of googlemaps-anywhere.php:
$this->options['sv_default']['lng'] = (isset($_POST['sv_lat']) ? $_POST['sv_lat'] : $this->options['sv_default']['lat']);
I think it should read:
$this->options['sv_default']['lng'] = (isset($_POST['sv_lng']) ? $_POST['sv_lng'] : $this->options['sv_default']['lng']);