VS 2K8
C#

The program bombs with
“Update requires a valid UpdateCommand when passed DataRow collection with modified rows.”

when I excecute the system-generated code on the savve button of the navigation toolbar below:

private void holderBindingNavigatorSaveItem_Click_1(object sender, EventArgs e)
{
this.Validate();
this.holderBindingSource.EndEdit();
this.tableAdapterManager.UpdateAll(this.portfolioDataSet);

This is a two column table. One column is the identity field and the next is a name.

I've configured in the dataset mgr ad nauseum.

Any suggestions greatly appreciated.