Hi - looks like there is a Zend problem in newsletter following the recent
changes as I'm getting the following in my trunk test site at r57094
Fatal error: Call to undefined method Zend\Mail\Message::clearRecipients()
in /xxxxxxxxxxxxx/lib/newsletters/nllib.php on line 1351
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7294 / Virus Database: 4489/11299 - Release Date: 01/01/16