Hello - I was testing your "Master/Detail" demo with version 1.2.11.4630, because this type of nested grid is exactly what I need. I got an exception after only 3 clicks in your demo.
1) Sort by Customer
2) Expand first customer: WOLZA
3) Expand first Order: 10374
An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.data.dll
Additional information: Cannot find column CustomerID.
Is this a bug, or was the demo not set up to handle this?
If this can be fixed with code in the demo, please let me know how.