OK, now that I've settled my title property conundrum by just calling the property "name" instead :-\ I go to add a "date" property to my ZClass and find that it doesn't like that either. Specifically, it won't let me add a property of type date with no value, giving me an "Invalid Date-Time String" error. I take it that empty date fields aren't allowed then...is this intended or a bug? Still using 2.3b1. -- Tim Moore