Removing the SMTP steps and custom fields had no effect. I don’t understand what you mean about Text field defined. Which field?
Sorry Ken, the forums aren’t letting me see your private reply. Can you email it to me please?
All is now fine. The calendar settings file became corrupt and who knows what else went haywire on the server. After a clean OS install (probably not needed but hey, it’s Filemaker), and fresh settings file all appears to be ok.
Running ok with…
Mac OS 10.11.6
FM Server 15.0.1.137
MailIt Plugin 6.0.35
MBS Plugin 6.4pr3
SoS 3.31