Hi there,
I found the problem - the data binding references had gone all wonky in my New Form page, i.e. the 'id' references in SharePoint:FormField and SharePoint:FieldDescription had gone all out of sequence after I added in an extra field and moved some around. The CascadeDropdowns is now working perfectly and that SimpleChild works like a dream. Marvellous and thanks so much for your help!
I found the problem - the data binding references had gone all wonky in my New Form page, i.e. the 'id' references in SharePoint:FormField and SharePoint:FieldDescription had gone all out of sequence after I added in an extra field and moved some around. The CascadeDropdowns is now working perfectly and that SimpleChild works like a dream. Marvellous and thanks so much for your help!