>When I set my custom tInstantiated property to =DATETIME(), the class definition evaluates the expression when I close the class designer and it then always shows the same DateTime every time it is subsequently instantiates.

For me it, is not evaluating datetime() when I save the class. It is doing it the first time I create the object. And then, interestingly, it is using the same time every time the object is created. Well, almost every time. Issuing a CLEAR ALL makes it start over with the correct time the next time the object is created. And so does exiting VFP and coming back in.

Interesting, to say the least.