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unhandled NullReferenceException UltraGrid.EnsureTempActiveRowAssigned()
posted

We migrated to Infragistics 2008 Vol 1 from 3.1 and the exception below is being thrown when our windows user control is loaded.
Any suggestions on how to determine the cause of this issue and resolve it?

"   at Infragistics.Win.UltraWinGrid.UltraGrid.EnsureTempActiveRowAssigned() 
  at Infragistics.Win.UltraWinGrid.UltraGridBase.PaintTimer_Tick(Object source, EventArgs e)  
 at System.Windows.Forms.Timer.OnTick(EventArgs e)  
 at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)  
 at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)  
 at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)  
 at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.
FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)   
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) 
  at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)  
 at System.Windows.Forms.Application.Run(Form mainForm)  
 at frmStart.Main() in C:\\frmStart.vb:line 5"