从C＃调用Freebase Provider时，FSharp.Data’System.MissingMethodException’

嗨我在F＃上有这段代码，如果我从F＃Interactive Editor测试它，那么isPalindrome和Extract方法都能正常工作：

namespace Portable3 open FSharp open FSharp.Data open Microsoft.FSharp.Linq open FSharp.Data.FreebaseOperators open MyTrip.Model.MyTrip open MyTrip.Model.FreeBase open System.Runtime open System.Linq module math = let isPalindrome (str : string) = let rec check(s : int, e : int) = if s = e then true elif str.[s]  str.[e] then false else check(s + 1, e - 1) check(0, str.Length - 1) [] module Extractor = [] let FreebaseApiKey = "AIzaSyCO31Ls" type FreebaseDataWithKey = FreebaseDataProvider let Extract mid = let dataWithKey = FreebaseDataWithKey.GetDataContext() let place = dataWithKey.Commons.Travel.``Travel destinations``.Where( fun x-> x.MachineId = mid) |> Seq.toList let result = new Place() let firstPlace = place.Head result.Name <- firstPlace.Name result 

我从C＃Console应用程序中调用此代码，如下所示：

  class Program { static void Main(string[] args) { //Works well var isPalin = math.isPalindrome("ABsBA"); //fails var res = Extractor.Extract("/m/04jpl"); Console.WriteLine(res); Console.Read(); } } 

控制台C＃项目是.net Framework 4.5.1版本，我也在这个项目上下载了FSharp.Data和FSharp.Core。 执行isPalindrome时效果很好但是当我即将执行Extract方法时会出现此错误：

 An unhandled exception of type 'System.MissingMethodException' occurred in FsharpConsoleTest.exe Additional information: Method not found: 'FSharp.Data.Runtime.Freebase.FreebaseDataContext FSharp.Data.Runtime.Freebase.FreebaseDataContext._Create(System.String, System.String, System.Boolean, System.String, System.Boolean, System.Boolean)'. 

对于发生了什么有什么想法吗？ 我在互联网上搜索但没有发现任何相关内容。 谢谢！