Hello, I just registered to ask how this is going.
I have a workflow from a back office resource planner in FileMaker.
I feed event records to a local iCal/calDAV installation.
I want to update items on a J 2.5 website running the FlexiContent CCK. http://www.flexicontent.org/
Each item has its own event list. FlexiContent has a date field class and its quite easy to build a calendar template around it, but it has no calDav support.