Google Drive “get_error not implemented” error. (asp.net c#)

[TheobSog]

im trying to implment the use of google drive in my app but i seem to be getting the following error "Method 'get_Error' in type 'Google.Apis.Drive.v2.Data.FileList' from assembly 'Google.Apis.Drive.v2, Version=1.2.4647.29713, Culture=neutral, PublicKeyToken=null' does not have an implementation" Does anyone know as to why this is occuring? i based my code on the example that google provides for its tasks api. code below.\[code\]using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.Util;using System.Diagnostics;using DotNetOpenAuth.Messaging;using DotNetOpenAuth.OAuth2;using Google.Apis.Authentication;using Google.Apis.Authentication.OAuth2;using Google.Apis.Authentication.OAuth2.DotNetOpenAuth;using Google.Apis.Util;using PrepHub.PrepHub;using System.Web.Services;using System.Threading;using Google.Apis;using Google.Apis.Drive.v2.Data;using Google.Apis.Drive.v2;using Google.Apis.Drive;namespace DriveExample{ public partial class GDrive : System.Web.UI.Page { private static DriveService _service; // We don't need individual service instances for each client. private OAuth2Authenticator<WebServerClient> _authenticator; private IAuthorizationState _state; private IAuthorizationState AuthState { get { return _state ?? HttpContext.Current.Session["AUTH_STATE"] as IAuthorizationState; } } protected void Page_Load(object sender, EventArgs e) { if (_service == null) { _service = new DriveService(_authenticator = CreateAuthenticator()); } if (HttpContext.Current.Request["code"] != null) { _authenticator = CreateAuthenticator(); _authenticator.LoadAccessToken(); } var ni = _service.Files.List().Fetch(); } private OAuth2Authenticator<WebServerClient> CreateAuthenticator() { var provider = new WebServerClient(GoogleAuthenticationServer.Description); provider.ClientIdentifier = ClientCredentials.ClientID; provider.ClientSecret = ClientCredentials.ClientSecret; var authenticator = new OAuth2Authenticator<WebServerClient>(provider, GetAuthorization) { NoCaching = true }; return authenticator; } private IAuthorizationState GetAuthorization(WebServerClient client) { // If this user is already authenticated, then just return the auth state. IAuthorizationState state = AuthState; if (state != null) { return state; } // Check if an authorization request already is in progress. state = client.ProcessUserAuthorization(new HttpRequestInfo(HttpContext.Current.Request)); if (state != null && (!string.IsNullOrEmpty(state.AccessToken) || !string.IsNullOrEmpty(state.RefreshToken))) { // Store and return the credentials. HttpContext.Current.Session["AUTH_STATE"] = _state = state; return state; } string scope = DriveService.Scopes.Drive.GetStringValue(); OutgoingWebResponse response = client.PrepareRequestUserAuthorization(new[] { scope }); response.Send(); return null; } }}\[/code\]