Empty item name error when updating Sitecore item via Glass interface

[Dan Solovay]

I am attempting to use the Sitecore Glass mapper (Glass.Mapper v 3.0.12.24 and Glass.Mapper.Sc v 3.2.1.42) to update a Sitecore item, and am receiving a Glass.Mapper.MapperException, "You can not set an empty or null Item name".  I have confirmed that the Name field is defined on the model, and is populated with the item name when the save method executes.

Additional details:

1. The model is defined as a C# interface.

2. The name field is defined as follows:

[SitecoreInfo(SitecoreInfoType.Name)]

string Name {get;}

3. The field being updated is a multilist, defined in the item as IList<Guid>

4. The item is retrieved using this code: 

SitecoreContext.GetItem<T>(

                path,

                isLazy: isLazy,

                inferType: inferType);

5. The item is saved with this:

SitecoreContext.Save<T>(glassItem)

6. This is the stack trace:

Glass.Mapper.Sc.DataMappers.SitecoreInfoMapper.MapToCms(AbstractDataMappingContext mappingContext)

   at Glass.Mapper.AbstractDataMapper.MapPropertyToCms(AbstractDataMappingContext mappingContext)

   at Glass.Mapper.Pipelines.ObjectSaving.Tasks.StandardSavingTask.<>c__DisplayClass1.<Execute>b__0(AbstractPropertyConfiguration x)

   at Glass.Mapper.ExtensionMethods.ForEach[T](IEnumerable`1 list, Action`1 action)

   at Glass.Mapper.Pipelines.ObjectSaving.Tasks.StandardSavingTask.Execute(ObjectSavingArgs args)

   at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.Run(T args)

   at Glass.Mapper.AbstractService.SaveObject(AbstractTypeSavingContext abstractTypeSavingContext)

   at Glass.Mapper.Sc.SitecoreService.WriteToItem[T](T target, Item item, Boolean updateStatistics, Boolean silent)

[Dan Solovay]

Update. Adding a "set" to the property resolved the issue.