Undefined index Error For Appointments +

This error

Notice: Undefined index: app_service_id in /srv/www/swiftlydev/htdocs/wp-content/plugins/appointments/includes/class_app_shortcodes.php on line 500

Using these shortcodes (Nothing else on page).

[app_monthly_schedule]
[app_confirmation]

I tried deleting and adding services. This did not help.

Screenshots:
- http://goo.gl/S94UE8
- http://goo.gl/OZqxyJ

Thanks,

Chris