The "isTimeEnabled" property is actually a property of the "LayerTime" property, and "LayerTime" is a property of the layers you're working with. Both of those properties are Read Only, so you can't edit them *directly* with Python code. Fortunately, layer time properties can be "updated" in Python (using the UpdateLayerTime function that I mentioned in my last post). As long as you enable the time on the layer file that you're using as a "time properties template," then any layer that you update with it will be time enabled. I don't know why Esri won't let us change the "isTimeEnabled" property directly.
Kerry