After upgrading to v8.3.20083.2039 my ultra grid will no longer insert my column. Before the upgrade this code sample worked great now I get a NullReferenceException "Object reference not set to an instance of an object."  Source="Infragistics2.Win.UltraWinGrid.v8.3" on every col.Header.VisiblePosition.

        private void setUnboundLocationColumns(UltraGridLayout LocGridLayout)
        {
            if (!LocGridLayout.Bands[0].Columns.Exists("MainLocation"))
            {
                UltraGridColumn col = LocGridLayout.Bands[0].Columns.Insert(2, "MainLocation");
                col.Header.Caption = "Main Location for";
                col.Header.VisiblePosition = 0;
            }
            if (!LocGridLayout.Bands[0].Columns.Exists("Company"))
            {
                UltraGridColumn col = LocGridLayout.Bands[0].Columns.Insert(3, "Company");
                col.Header.Caption = "Company";
                col.Header.VisiblePosition = 1;
                col.Hidden = true;
            }
            if (!LocGridLayout.Bands[0].Columns.Exists("AcctNumber"))
            {
                UltraGridColumn col = LocGridLayout.Bands[0].Columns.Insert(4, "AcctNumber");
                col.Header.Caption = "Account #";
                col.Header.VisiblePosition = 2;
                col.Hidden = true;
            }
        }

Any help in explaining why this is no longer a valid way to insert columns would be very appreciated. Thank you.