Möglicher Versionskonflikt. Der Typ System.Collections.Comparer hat 1 Member; 
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       Dim FileOutput As New FileStream(Pfad, FileMode.OpenOrCreate, _
         FileAccess.Write)
        Dim binFttr As New BinaryFormatter
        Try
               binFttr.Serialize(FileOutput, Me.Nietfeld)
         Catch ex As Exception
               MsgBox(ex.ToString)
        End Try
        FileOutput.Close()
        binFttr = Nothing

Dim FileInput As FileStream
        Me.Nietfeld = New CNietfeld
        Dim binFttr As New BinaryFormatter
        Try
            FileInput = New FileStream(path, FileMode.Open, FileAccess.Read)
            Me.Nietfeld = CType(binFttr.Deserialize(FileInput), CNietfeld)
        Catch ex As Exception
            MsgBox("File Open error: " & ex.Message)
         Finally
            FileInput.Close()
            binFttr = Nothing
        End Try