After upgrading my project with sharded cluster from 1.2.0 to 1.3.1 and switching serializer from wire to Hyperion, I get this exception at ClusterSharding.Get(system) :

> Attempt by method 'Akka.Cluster.Sharding.Serialization.ClusterShardingMessageSerializer..ctor(Akka.Actor.ExtendedActorSystem)' to access method 'Akka.Serialization.SerializerIdentifierHelper.GetSerializerIdentifierFromConfig(System.Type, Akka.Actor.ExtendedActorSystem)' failed.

My config looks like:
provider = "Akka.Cluster.ClusterActorRefProvider, Akka.Cluster"
serializers {
wire = "Akka.Serialization.HyperionSerializer, Akka.Serialization.Hyperion"
}
serialization-bindings {
"System.Object" = wire
}
no special entries or custom fallbacks for sharding