The exception is:

System.Exception: Doesn't match
at Akka.FSharp.Linq.toExpression[Actor](Expression f)
at Akka.FSharp.Spawn.spawnOpt[Message,Returned](IActorRefFactory actorFactory, String name, FSharpFunc2 f, FSharpList1 options)

I think the problem could be related to the Akka.Fsharp project referencing the 1.1.0 version of FSharp.Quotations.Evaluator which is a broken package. The 1.1.2 version of that package is correct.