// First method where it goes wrong, it goes wrong at the return line.

public static IAsyncResult GetRequestToken(string consumerKey, string consumerSecret, string callbackAddress, WebProxy proxy, TimeSpan timeout, Action<OAuthTokenResponse> function)
        {
            Func<string, string, string, WebProxy, OAuthTokenResponse> methodToCall = OAuthUtility.GetRequestToken;

            return methodToCall.BeginInvoke(
                consumerKey,
                consumerSecret,
                callbackAddress,
                proxy,
                result =>
                {
                    result.AsyncWaitHandle.WaitOne(timeout);
                    try
                    {
                        function(methodToCall.EndInvoke(result));
                    }
                    catch (TwitterizerException)
                    {
                        function(null);
                    }
                },
                null);
        }


// In a 2nd method it crashes on this little piece of code where parameters is a Dictionary<string, object>
 var paramsSorted = from p in parameters
                               orderby p.Key, p.Value
                               select p;