Issue With BindableBase

I am working on a clients application that is using CSLA Assembly Version 2.0.3.0. The error I am getting is

System.ArgumentOutOfRangeException was unhandled by user code
  HResult=-2146233086
  Message=Specified argument was out of the range of valid values.
Parameter name: rowIndex
  Source=System.Windows.Forms
  ParamName=rowIndex
  StackTrace:
       at System.Windows.Forms.DataGridView.InvalidateCell(Int32 columnIndex, Int32 rowIndex)
       at System.Windows.Forms.DataGridView.DataGridViewDataConnection.ProcessListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.DataGridView.DataGridViewDataConnection.currencyManager_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.InnerList_ListChanged(Object sender, ListChangedEventArgs e)
       at System.ComponentModel.BindingList`1.OnListChanged(ListChangedEventArgs e)
       at System.ComponentModel.BindingList`1.Child_PropertyChanged(Object sender, PropertyChangedEventArgs e)
       at Csla.Core.BindableBase.OnPropertyChanged(String propertyName) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Csla203\Core\BindableBase.cs:line 99
       at Csla.Core.BusinessBase.PropertyHasChanged(String propertyName) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Csla203\Core\BusinessBase.cs:line 253
       at Csla.Core.BusinessBase.PropertyHasChanged() in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Csla203\Core\BusinessBase.cs:line 236
       at JmFamily.Mps.Entities.MPSDYN03.Wmps02900d.set_ClientNbr(String value) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\JMFamily.Entity\MPSDYN03\Wmps02900d.cs:line 665
       at JMFamily.Mps.W_wmps_029.dw_detl_ue_select_ovl() in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Mps\Mpsbe\W_wmps_029.cs:line 11261
       at JMFamily.Mps.W_wmps_029.dw_detl_rowfocuschanged(Object sender, EventArgs e) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Mps\Mpsbe\W_wmps_029.cs:line 13515
       at Metex.Core.DataUserControl.OnRowFocusChanged(EventArgs e) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Metex.Core\DataUserControl.cs:line 753
       at Metex.Core.DataUserControl.RaiseRowFocusChangedEvent(Object sender, EventArgs e) in C:\WOFCOCollection\MPS\Main\WinApps\GUI\Metex.Core\DataUserControl.cs:line 828
       at System.Windows.Forms.BindingSource.OnCurrentChanged(EventArgs e)
       at System.Windows.Forms.BindingSource.CurrencyManager_CurrentChanged(Object sender, EventArgs e)
       at System.Windows.Forms.CurrencyManager.OnCurrentChanged(EventArgs e)
  InnerException:
nonSerializableHandlers.Invoke(this,
          new PropertyChangedEventArgs(propertyName));

The code that causes this error follows

[EditorBrowsable(EditorBrowsableState.Advanced)]
protected virtual void OnPropertyChanged(string propertyName)
{
 PropertyChangedEventHandler  nonSerializableHandlers = _nonSerializableHandlers;if (nonSerializableHandlers != null )
 nonSerializableHandlers.Invoke(this, new PropertyChangedEventArgs(propertyName));
 PropertyChangedEventHandler  serializableHandlers = _serializableHandlers;if (serializableHandlers != null)
 serializableHandlers.Invoke(this, new PropertyChangedEventArgs(propertyName));
}

The propertyName parameter happens to be "ClientNbr" and when I look at the object reference by "this" it does contain a property named "ClientNbr". I cannot figure out why this error is occuring. The object uses a bindingSource.

Is this a known bug?. The PropertyHasChanged method is working correctly in countless other examples in the application but in this particular case there are three properties that are being changed on this object and they all have the same error.

Thanks