f# - FSharp.Data 'System.MissingMethodException' when calling Freebase Provider from C# -


hi have piece of code on f#, if test f# interactive editor both ispalindrome , extract methods work well: 

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 true     elif str.[s] <> str.[e] false     else check(s + 1, e - 1)  check(0, str.length - 1)   [<autoopen>]  module extractor =  [<literal>]  let freebaseapikey = "aizasyco31ls" type freebasedatawithkey = freebasedataprovider<key=freebaseapikey>  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

and call code c# console app this:

 class program {     static void main(string[] args)     {         //works         var ispalin = math.ispalindrome("absba");         //fails         var res = extractor.extract("/m/04jpl");         console.writeline(res);         console.read();      } }

the console c# project .net framework 4.5.1 version, downloaded fsharp.data , fsharp.core on project also. when executing ispalindrome works when i'm execute extract method error appears:

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)'.

any idea on what's happening? searched on internet didn't found relevant. thanks!

the problem @ end using portable library fsharp.data. tried using in normal f# library , found no problems, had debuggin capabilities, , no errors c# integration f# happening!


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