I have a datagrid in a new project... pretty simple - a few bound fields directly from a DataTable. I have sorting enabled, and I set the datasource on each Page_Load - this is how it has always worked before.

It loads and displays fine; but for some reason whenever I click on a header it crashes with

'Async request failed. [NullReferenceException]: Object reference not set to an object....at Infragistics.Web.UI.GridControls.Sorting.OnColumnSorted(ControlDataField column)...'

I don't know what is different about this grid vs. other ones that I have sorted fine. I am using the latest service pack so I have the newest version. I have tried and tried to get it to work, even simplifying it to two columns but every time I get the same message.

Any ideas? I can't continue till I figure this one out.

/Tom