When i run my program in win 2000, the following message happen.
i put a checkbox in ultragrid, then prompt this error. If i remove checkbox from ultragrid, the program run OK.

Is ultragrid can not support checkbox in win 2000 ? 

System.ArgumentException: CheckBox style is not supported for the column's data type.
   at Infragistics.Win.UltraWinGrid.UltraGridColumn.set_Style(ColumnStyle value)
   at Cpy.BOS.Admin.WorkItem.User.ViewUser.InitializeUIOnce()
   at Cpy.Core.UI.SmartControl.CpyViewSmart.InitializeOnce()
   at Cpy.BOS.Admin.WorkItem.User.ViewUser.BindData()
   at Cpy.BOS.Admin.WorkItem.User.PresenterUser.View_New(Object sender, Object e)
   at Cpy.BOS.Admin.WorkItem.User.PresenterUser.View_Init(Object sender, Object e)
   at Cpy.Core.UI.View.CpyView.CpyView_FormInit(Object sender, EventArgs e)
   at Cpy.Core.UI.SmartControl.CpyViewSmart.OnFormInit(Object sender, EventArgs e)
   at Cpy.Core.UI.View.CpyForm.CpyForm_Load(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)