Let's follow up this discussion at the Neptune Community
(this forum will be kept in read-only mode)
Recreated example from Webinar on 12.2.2015 - Develop SAPUI5 app using Neptune Application Designer (NAD).
Stuck at last bit with the dialog box.
Header is appearing but the child table is not.
It is working now.
The problem was just that the table was a child to headerObject. That will not work. I just changed it and all ok.