Environment

GroupWise 24.x

Situation

Some appointments created on the MAC are causing the calserver to duplicate appointments until the calserver is stopped and restarted.

You will be able to see two errors similar to these 

[ERROR] Calendar service returned a null event after create of 'XXX.domain.po.100.1376F38.1.787e2.1.ics'

and/or 

xxx@192.168.12.7 StandardFilter [ERROR] exception sending content macOS/13.6.6 (22G630) dataaccessd/1.0

java.lang.RuntimeException: createNew method on: class com.novell.groupwise.dav.resources.DavCalendarResource returned a null resource. Must return a reference to the newly created or modified resource

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