As soon as I try to convert a project calendar having more than 1 exception to the corresponding XML using the supplied method "ToExceptionsXml" I get a runtime exception about misformed XML.

Stacktrace:

bei System.Xml.XmlWellFormedWriter.ThrowInvalidStateTransition(Token token, State currentState)
bei System.Xml.XmlWellFormedWriter.AdvanceState(Token token)
bei System.Xml.XmlWellFormedWriter.WriteStartElement(String prefix, String localName, String ns)
bei Infragistics.ObjectSerializer.Parser.SaveHelper(Object value, PropertySerializationInfo propInfo, Boolean writeTypeNameElem)
bei Infragistics.ObjectSerializer.Parser.SaveCollectionValueHelper(Object value, PropertySerializationInfo propInfo, String encloseInElement)
bei Infragistics.ObjectSerializer.Parser.SaveHelper(Object value, PropertySerializationInfo propInfo, Boolean writeTypeNameElem)
bei Infragistics.ObjectSerializer.Save(XmlWriter writer, Object value)
bei Infragistics.ObjectSerializer.SaveAsXmlFragment(Object value, String& xmlFragment)
bei Infragistics.Controls.Schedules.XmlDeserializerConverter.ConvertBack(Object value, Type targetType, Object parameter, CultureInfo culture)
bei Infragistics.Controls.Schedules.ProjectUtilities.PropValToXml[T](StoragePropsInfo info, Int32 prop, T item)

Example code used to create the 2 exceptions:

_Calendar.Exceptions.Add(new ProjectCalendarException() { DisplayName = "Exception 1", DaySettings = new DaySettings() { IsWorkday = false }, DateRange = new Infragistics.DateRange(new DateTime(DateTime.Today.Year, 12, 25), new DateTime(DateTime.Today.Year, 12, 25)), Recurrence = new DateRecurrence() { Frequency = DateRecurrenceFrequency.Yearly, Interval = 1 } });

        _Calendar.Exceptions.Add(new ProjectCalendarException() { DisplayName = "Exception 2", DaySettings = new DaySettings() { IsWorkday = false }, DateRange = new Infragistics.DateRange(new DateTime(DateTime.Today.Year, 12, 26), new DateTime(DateTime.Today.Year, 12, 26)), Recurrence = new DateRecurrence() { Frequency = DateRecurrenceFrequency.Yearly, Interval = 1 } });

If I add only 1 exception to the calendars list, the ToExceptionsXml method works as expected.