Issue with atVisualQuery

I can't seem to get atVisualQuery to work at all with a custom database.

I don't have a direct connection to the db in my client app, so I need to use the custom database component to provide the table/field information.

However, this is not adding any items to the visual query treeview at runtime.  I also tried the custom database demo which ships with the trial version and this does not work either.  

none of the atCustomDatabase events appear to be called.

I'm using 10.3 - Has anyone got this working?  

The custom database demo here is working fine. It shows tables "Cities" and "States" in the table list for user to pick from. What happens in your case?