Hello,
I am using a NTreeList control in detail view.
When I first populate the control, I am able to sort the columns as expected.
But if I add entries to my data source and rebuild the node collection, as soon as I click on any column header, I get an exception:

"An unhandled exception of type 'System.InvalidCastException' occurred in Nevron.Presentation.dll

Additional Information: Unable to cast object of type 'Nevron.UI.Winform.Controls.NTreeListNode' to type 'Nevron.UI.Winform.Controls.NTReeListHeaderItem'
"

Unfortunately, this error is holding up release of a product update (of course).

Any help/ideas are much appreciated!

-tomas