OleDbCommandBuilder generer ikke nogle kommandoer

Koden først:

Jeg har lige simplificeret min klasse lidt.
Public MustInherit Class DatabaseSupertype

  Private mDataAdapter As OleDbDataAdapter
  Private mstrTabel As String = Nothing
  Private mNoegler As String()
  Private mCommandBuilder As OleDbCommandBuilder
  Private Shared dsDataSet As DataSet = Nothing

  Protected Sub New(ByVal indTabel As String, ByVal AttributeList As String, ByVal Noegler As String())
    dsDataSet = DatabaseHandler.GlobalDataSet

    Tabel = indTabel

    mNoegler = Noegler

    Dim Connection As OleDbConnection = New OleDbConnection(New Configuration.AppSettingsReader().GetValue("ConnectionString", GetType(String)).ToString)

    mDataAdapter = New OleDbDataAdapter(String.Format("SELECT {0} FROM {1}", AttributeList, Tabel), Connection)

    mCommandBuilder = New OleDbCommandBuilder(mDataAdapter)

  End Sub

  Public Sub Save()

    Dim Table As DataTable = dsDataSet.Tables(mstrTabel)

    mDataAdapter.Update(Table)

  End Sub
End Class

Jeg fatter ikke at mDataAdapter.UpdateCommand forbliver Nothing. Nogle idéer?