I seem to be getting this random crash with 10.2.20102.1004. Just have an UltraComboEditor with 4 text items and images on a modal dialog. Crash occurs on ShowDialog after randomly opening and closing the dialog a few times without doing anything and no events handled on the combo editor. The only thread is the UI thread.

System.InvalidOperationException was unhandled

  Message="Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on."

  Source="System.Windows.Forms"

  StackTrace:

       at System.Windows.Forms.Control.get_Handle()

       at System.Windows.Forms.Control.get_InternalHandle()

       at System.Windows.Forms.Control.DestroyHandle()

       at System.Windows.Forms.Control.Dispose(Boolean disposing)

       at Infragistics.Win.UltraControlBase.Dispose(Boolean disposing)

       at Infragistics.Win.ValueListDropDown.Dispose(Boolean disposing)

       at System.ComponentModel.Component.Dispose()

       at Infragistics.Win.ValueList.OnDispose()

       at Infragistics.Win.BindableValueList.OnDispose()

       at Infragistics.Shared.DisposableObject.Dispose()

       at Infragistics.Win.UltraWinEditors.UltraComboEditor.DisposeValueList()

       at Infragistics.Win.UltraWinEditors.UltraComboEditor.Dispose(Boolean disposing)

       at System.ComponentModel.Component.Finalize()

  InnerException: