I have install all of newsletter and make a test e-mail and it is working. Make a template and sent to e-mail with cron but get the error with cron:

Notice: Undefined index: 2 in newsletter_newsletter_load() (regel 1023 van /storage/web/public/sites/www.foto-retoucheren.nl/sites/all/modules/newsletter/newsletter.module).
Notice: Trying to get property of non-object in NewsletterCustom->updateNewsletter() (regel 29 van /storage/web/public/sites/www.foto-retoucheren.nl/sites/all/modules/newsletter/includes/newsletter...).
Notice: Trying to get property of non-object in NewsletterCustom->updateNewsletter() (regel 40 van /storage/web/public/sites/www.foto-retoucheren.nl/sites/all/modules/newsletter/includes/newsletter...).

And no e-mail are sent ?

Can anyone help me with this