Hi,
 
we have a regression in 
Builders<Class1>.Update.Set(x => x.Prop1.SubProp1, "someValue");
We get an exception (see below) in LinqProvider V3. V2 works fine.
 
Thanks!
 
Best Regards
Dimitri
 
MongoDB.Driver.Linq.ExpressionNotSupportedException: Expression not supported: ConvertChecked(Param_0.Prop1.SubProp1, String).
at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToFilterTranslators.ToFilterFieldTranslators.ExpressionToFilterFieldTranslator.Translate(TranslationContext context, Expression expression)
at MongoDB.Driver.Linq.Linq3Implementation.LinqProviderAdapterV3.TranslateExpressionToField[TDocument,TField](Expression`1 expression, IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry, Boolean allowScalarValueForArrayField)
at MongoDB.Driver.ExpressionFieldDefinition`2.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider, Boolean allowScalarValueForArrayField)
at MongoDB.Driver.ExpressionFieldDefinition`2.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
at MongoDB.Driver.OperatorUpdateDefinition`2.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
at MongoDB.Driver.MongoCollectionImpl`1.ConvertWriteModelToWriteRequest(WriteModel`1 model, Int32 index)