Maximum fields I can save in Bindingsource

Experts,

I have run into a maximum number of fields I can save in VB.net bindingsource, using Access 2007 table.

I've use this code:

Try
            Me.Validate()
            Me.TblFlange14CalcBindingSource.EndEdit()
            Me.TblFlange14CalcTableAdapter.Update(Me.JobsDataSet.TblFlange14Calc)
            ' MsgBox("Update successful")
            Beep()

        Catch ex As Exception
            MsgBox("Update failed")
        End Try

I first thought I had an illegal field name, but have since found that if I try to save more than about 97 fields, it fails.

If I go into DataSources, use the wizard and remove one field (any field) from the Dataset (i.e., uncheck one box so that field is not included), the above code will save changes.

I have included Access database to demonstrate.
Experts-exchange blocks upload of the vb.net project Dataset files, but I will email to you directly if requested.

I cannot believe 96-97 fields exceed some limit of fields that can be edited and saved back.

Any help MUCH appreciated!

-Larry