New Word Merge (as from PU250) sending e-mail keeps on giving message "Mandatory: Sender"

Allthough the e-mail adress has been filled correctly on the actors HRM card, still this message appears.

Solution: check the division [HRM / Setup / Divisions] and see Adress section. Did you link the division to an account (most likely an account representing this division) and has an e-mail adress been filled on that accountcard. It should be visible here.