Конфигурация для известных типов (в разделе dataContractSerializer из группы разделов system.runtime.serialization) содержит элемент "Параметр" без установленных значений "Индекс" и "Тип". Необходимо задать одно из этих значений.

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Unlocalized message

Configuration for known types (in the system.runtime.serialization section group, dataContractSerializer section) contains a 'parameter' element that has neither 'index' nor 'type' set. You must set one of these values.

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