TargetInvocationException
  Property accessor 'SelectedValue' on object 'MicroFour.StrataFrame.UI.Windows.Forms.DevEx.ComboBoxEdit' threw the following exception:'Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index'
ArgumentOutOfRangeException
  Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Source     : System

Stack Trace: 
   at System.Collections.ArrayList.get_Item(Int32 index)
   at MicroFour.StrataFrame.UI.Windows.Forms.ComboBoxItemCollection.get_Item(Int32 Index)
   at MicroFour.StrataFrame.UI.Windows.Forms.DevEx.ComboBoxEdit.get_SelectedValue()
   at System.ComponentModel.ReflectPropertyDescriptor.GetValue(Object component)
   at System.Windows.Forms.Binding.GetPropValue()
   at System.Windows.Forms.Binding.PullData(Boolean reformat, Boolean force)
   at System.Windows.Forms.Binding.Target_PropertyChanged(Object sender, EventArgs e)
   at DevExpress.XtraEditors.Repository.RepositoryItemComboBox.RaiseSelectedValueChanged(EventArgs e)
   at DevExpress.XtraEditors.ComboBoxEdit.UpdatePopupEditValueIndex(Int32 prevIndex)
   at DevExpress.XtraEditors.ComboBoxEdit.set_EditValue(Object value)
   at DevExpress.XtraEditors.PopupBaseEdit.AcceptPopupValue(Object val)
   at DevExpress.XtraEditors.PopupBaseEdit.UpdateEditValueOnClose(PopupCloseMode closeMode, Boolean acceptValue, Object newValue, Object oldValue)
   at DevExpress.XtraEditors.PopupBaseEdit.DoClosePopup(PopupCloseMode closeMode)
   at DevExpress.XtraEditors.PopupBaseEdit.ClosePopup(PopupCloseMode closeMode)
   at DevExpress.XtraEditors.PopupBaseEdit.ClosePopup()
   at DevExpress.XtraEditors.Popup.PopupListBox.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at DevExpress.Utils.Controls.ControlBase.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)