DataGridView InvalidOperationException when changing BindingSource.DataSource

[jetreat]

I receive an "Operation did not succeed because the program cannot commit or quit a cell value change" error when I change the DataSource of the BindingSource bound to the DataGridView. This occurs even if I clear the BindingSource (no errors and there are no rows in the DataGridView) and then assign the new DataSource.

mUtilizations= New Utilizations()
CU_BindingSource.DataSource = mUtilizations

The cell value must be getting assigned but not committed and then reassigned, but I cannot figure out where. The data displays correctly, although if there were more rows with the initial data the extra rows remain as blank row.

Here is the trace:

Message=Operation did not succeed because the program cannot commit or quit a cell value change.
Source=System.Windows.Forms
StackTrace:
at System.Windows.Forms.DataGridView.set_CurrentCell(DataGridViewCell value)
at System.Windows.Forms.DataGridView.OnClearingRows()
at System.Windows.Forms.DataGridViewRowCollection.ClearInternal(Boolean recreateNewRow)
at System.Windows.Forms.DataGridView.RefreshColumnsAndRows()
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.ComponentModel.ListChangedEventHandler.Invoke(Object sender, ListChangedEventArgs e)
at System.Windows.Forms.BindingSource.OnListChanged(ListChangedEventArgs e)
at System.Windows.Forms.BindingSource.ResetBindings(Boolean metadataChanged)
at System.Windows.Forms.BindingSource.SetList(IList list, Boolean metaDataChanged, Boolean applySortAndFilter)
at System.Windows.Forms.BindingSource.ResetList()
at System.Windows.Forms.BindingSource.ParentCurrencyManager_MetaDataChanged(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Windows.Forms.CurrencyManager.OnMetaDataChanged(EventArgs 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.ResetBindings(Boolean metadataChanged)
at System.Windows.Forms.BindingSource.SetList(IList list, Boolean metaDataChanged, Boolean applySortAndFilter)
at System.Windows.Forms.BindingSource.ResetList()
at System.Windows.Forms.BindingSource.set_DataSource(Object value)
at EntryForm.frmEntryForm.LoadUtilizations() in C:\VS 2010 Projects\MOOS.Net\EntryForm\frmEntryForm.vb:line 545
at EntryForm.frmEntryForm.ComboBindingSource_CurrentItemChanged(Object sender, EventArgs e) in C:\VS 2010 Projects\MOOS.Net\EntryForm\frmEntryForm.vb:line 297
at System.Windows.Forms.BindingSource.OnCurrentItemChanged(EventArgs e)
at System.Windows.Forms.BindingSource.CurrencyManager_CurrentItemChanged(Object sender, EventArgs e)
at System.Windows.Forms.CurrencyManager.OnCurrentChanged(EventArgs e)
InnerException:

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